Steviol glycoside compounds, compositions for oral ingestion or use, and method for enhancing steviol glycoside solubility

ABSTRACT

Novel steviol glycoside compounds characterized by a first group of four glucopyranose residues attached via the number 13 carbon (C13) of the steviol moiety and a second group of two or three glucopyranose residues attached via the number 19 carbon (C19) of the steviol moiety are described, and exemplified by compounds 1-4. These compounds can be present in a composition with other steviol glycosides (e.g., Reb D and Reb M) to enhance their solubilities. Accordingly, the novel compounds can facilitate the preparation of Compound name (C-13) aqueous compositions having a higher concentration of steviol glycosides. A steviol glycoside composition including one or more of compounds 1-4 can be used as a sweetener composition to sweeten other compositions (sweetenable compositions) such as foods, beverages, medicines, oral hygiene compositions, nutraceuticals, and the like.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.16/553,200, filed Aug. 28, 2019 and issued as U.S. Pat. No. 10,906,927on Feb. 2, 2021, which is a continuation of the U.S. patent applicationSer. No. 15/536,385, filed Jun. 15, 2017 and issued as the U.S. Pat. No.10,711,024 on Jul. 14, 2020, which is a U.S. National Stage Applicationof International Application No. PCT/US2015/066419, filed on Dec. 17,2015, which claims the benefit of U.S. Provisional Application No.62/093,213, filed on Dec. 17, 2014, the disclosures of each of which areexplicitly incorporated by reference herein in their entirety.

FIELD

The present invention relates to novel steviol glycosides, compositionsincluding these steviol glycosides, and methods for improving solubilityof known steviol glycosides compounds using these isomers. The presentinvention also relates to sweetener compositions and sweetenedcompositions including one or a combination of these isomers, and usesof such sweetener compositions to prepare sweetened compositionsincluding food, beverages, dental products, pharmaceuticals,nutraceuticals, and the like.

BACKGROUND

Sugars, such as sucrose, fructose and glucose, are utilized to provide apleasant taste to beverages, foods, pharmaceuticals, and oralhygienic/cosmetic products. Sucrose, in particular, imparts a tastepreferred by consumers. Although sucrose provides superior sweetnesscharacteristics, it is caloric. Non-caloric or lower caloric sweetenershave been introduced to satisfy consumer demand, and there is desire forthese types of sweeteners that have favorable taste characteristics.

Stevia is a genus of about 240 species of herbs and shrubs in thesunflower family (Asteraceae), native to subtropical and tropicalregions from western North America to South America. The species Steviarebaudiana, commonly known as sweetleaf, sweet leaf, sugarleaf, orsimply stevia, is widely grown for its sweet leaves. Stevia-basedsweeteners may be obtained by extracting one or more sweet compoundsfrom the leaves. Many of these compounds are steviol glycosides, whichare glycosides of steviol, a diterpene compound. These diterpeneglycosides are about 150 to 450 times sweeter than sugar.

Examples of steviol glycosides are described in WO 2013/096420 (see,e.g., listing in FIG. 1); and in Ohta et. al., “Characterization ofNovel Steviol Glycosides from Leaves of Stevia rebaudiana Morita,” J.Appl. Glycosi., 57, 199-209 (2010) (See, e.g., Table 4 at p. 204).Structurally, the diterpene glycosides are characterized by a singlebase, steviol, and differ by the presence of carbohydrate residues atpositions C13 and C19, as presented in FIGS. 2a-2k . See also PCT PatentPublication WO 20013/096420.

Typically, on a dry weight basis, the four major steviol glycosidesfound in the leaves of Stevia are dulcoside A (0.3%), rebaudioside C(0.6-1.0%), rebaudioside A (3.8%) and stevioside (9.1%). Otherglycosides identified in Stevia extract include one or more ofrebaudioside B, D, E, F, G, H, I, J, K, L, M, N, O, steviolbioside andrubusoside.

While the major steviol glycoside Reb A is commonly used as sweetener inbeverage applications it has off-taste issues. More recently, there hasbeen focus on certain minor steviol glycosides which have better tasteproperties. For example, rebaudioside M has higher sweetness intensityand is more potent than other steviol glycosides (e.g., see Prakash, I.,et al. (2013) Nat. Prod. Commun., 8: 1523-1526, and WO 2013/096420).Rebaudioside D tastes about 200-220 times sweeter than sucrose and in asensory evaluation it had a slow onset of sweetness and was very clean(e.g., see Prakash, I., et al. (2012) Int. J. Mol. Sci.,13:15126-15136).

Some minor rebaudiosides can be challenging to use because they haveless than desirable water solubility properties. For example, it hasbeen reported that Reb D is difficult to use in food products because ofits low solubility in water at room temperature. For instance, Reb Dneeds to be heated to near boiling water temperature for 2 hours inorder to achieve complete dissolution at 0.8% concentration. At mostonly 300 to 450 ppm can be solubilized in water at 23° C. (e.g., see US2013/0251881). As another example, rebaudioside M obtained from Steviarebaudiana has poor aqueous solubility and dissolution qualities inbeverage formulations (e.g., see US 2014/0171519).

Certain methods to improve rebaudioside solubility are less thandesirable because they are labor intensive, requiring high processingtemperatures and the use excipient compounds. For example, see WO2013148177.

SUMMARY

The present invention generally relates to novel steviol glycosides, andalso relates to using these isomers for improving the solubility ofother steviol glycosides compounds in a composition. The invention alsorelates to uses of the novel steviol glycosides, such as along withother minor and/or major steviol glycosides compounds, as sweetenercompositions. The sweetener compositions can be used to preparesweetened compositions including food, beverages, dental products,pharmaceuticals, nutraceuticals, and the like.

In one embodiment, the invention provides steviol glycosides (compounds1, 2, 3, and 4) having to the following structures:

Compounds 1, 2, 3, and 4 can be, individually, in purified form.Compounds 1, 2, 3, and 4 can also be in mixture with each other. Thismixture can be purified from other components (i.e., other componentsthat are different than compounds), or the mixture can include one ormore other component(s), such as other steviol glycosides (e.g.,rebaudioside M and/or rebaudioside D), that are different from compounds1, 2, 3, and 4.

Accordingly, other embodiments of the invention are directed tofermentation media comprising one or more of compound(s) 1, 2, 3, and 4,optionally with one or more other component(s), such as other steviolglycosides, such as rebaudioside M and/or rebaudioside D. A recombinanthost cell can be used to metabolically produce compound(s) 1, 2, 3, and4. The fermentation media can be enriched steviol glycosides or refinedto select for certain steviol glycosides.

Other embodiments of the invention are directed of providing orenhancing sweetness to a composition suitable for oral ingestion or oraluse comprising adding one or more of the compounds 1, 2, 3, or 4, suchas along with one or more other steviol glycosides (e.g., rebaudioside Mand/or rebaudioside D), to a material or composition suitable for oralingestion or use. Accordingly the invention also provides a compositionsuitable for oral ingestion or oral use comprising one or more of thecompounds 1, 2, 3, or 4, such as beverages, beverage concentrates,frozen beverage, powders, foodstuffs, confections, condiments, chewinggum, dairy products, sweeteners, pharmaceutical compositions, and dentalcompositions.

In another embodiment, the invention provides a method for enhancing thesolubility of a steviol glycoside in an aqueous composition. The methodcomprises a step of providing an aqueous composition comprising firstand second steviol glycosides. The first steviol glycoside has abranched chain of four glucose units attached to an atom of acyclooctane group of a steviol moiety of the first steviol glycoside.The second steviol glycoside is different than the first steviolglycoside and has a solubility in an aqueous composition (that lacks thefirst steviol glycoside) that is lower than its solubility in an aqueouscomposition that includes the first steviol glycoside. Compounds 1, 2,3, and 4 exemplify the first steviol glycoside.

As an example, the solubility of the (second) steviol glycoside can beenhanced by producing the first and second glycosides together, such asby a recombinant organism under fermentation conditions. As anotherexample, the solubility of the (second) steviol glycoside can beenhanced by adding the first steviol glycoside to a composition that hasthe second steviol glycoside.

In another embodiment, the invention provides another method forenhancing the solubility of a steviol glycoside in an aqueouscomposition. The method includes a step of providing an aqueouscomposition comprising first and second steviol glycosides, wherein thesecond steviol glycoside is selected from the group consisting ofrebaudioside A, rebaudioside B, rebaudioside M, rebaudioside D,rebaudioside I. rebaudioside Q, rebaudioside N, and stevioside. Thefirst steviol glycoside is different from the second steviol glycoside,and has a higher or equal molecular weight than the rebaudioside M, andthe second steviol glycoside has a solubility in an aqueous compositionthat lacks the first steviol glycoside that is lower than a solubilityof the second steviol glycoside in an aqueous composition that includesthe first steviol glycoside.

DESCRIPTION OF THE FIGURES

FIG. 1 shows structures of known steviol glycosides.

FIG. 2 is a purification chromatogram of compound 1 (OPS 1-1) andcompound 2 (OPS 1-2).

FIG. 3 is a purification chromatogram of compound 3 (OPS 1-4) andcompound 4 (OPS 1-5).

FIGS. 4A-D constitute a graph showing the position and number ofchemical shifts from NMR spectroscopy for compound 1 (OPS 1-1), ¹H NMRand ¹³C NMR spectroscopy data and atom numbering for compound 1, andchemical assignments for compound 1 made based on COSY, TOCSY,HSQC-DEPT, and HMBC correlations.

FIGS. 5A-D constitute a graph showing the position and number ofchemical shifts from NMR spectroscopy for compound 2 (OPS 1-2), ¹H NMRand ¹³C NMR spectroscopy data and atom numbering for compound 2, andchemical assignments for compound 2 made based on COSY, TOCSY,HSQC-DEPT, and HMBC correlations. The chemical structure shown in FIG.5B is the same as that shown in FIG. 5C, where it is more legible.

FIGS. 6A-D constitute a graph showing the position and number ofchemical shifts from NMR spectroscopy for compound 3 (OPS 1-4), ¹H NMRand ¹³C NMR spectroscopy data and atom numbering for compound 3, andchemical assignments for compound 3 made based on COSY, TOCSY,HSQC-DEPT, and HMBC correlations. The chemical structure shown in FIG.6A is the same as that shown in FIG. 6C, where it is more legible.

FIGS. 7A-D constitute a graph showing the position and number ofchemical shifts from NMR spectroscopy for compound 4 (OPS 1-5), ¹H NMRand ¹³C NMR spectroscopy data and atom numbering for compound 4, andchemical assignments for compound 4 made based on COSY, TOCSY,HSQC-DEPT, and HMBC correlations. The chemical structure shown in FIG.7A is the same as that shown in FIGS. 7B and 7C, where it is morelegible.

DETAILED DESCRIPTION

Embodiments of the disclosure described herein are not intended to beexhaustive or to limit the invention to the precise forms disclosed inthe following detailed description. Rather a purpose of the embodimentschosen and described is so that the appreciation and understanding byothers skilled in the art of the principles and practices of the presentinvention can be facilitated.

For example, some embodiments of the disclosure are directed to thefollowing compounds:

Compounds 1, 2, 3, and 4 are not known to be produced in the Steviaplant. Rather, it has been found that these compounds 1, 2, 3, and 4 canbe produced by microorganisms engineered for the synthesis of othersteviol glycosides.

Structurally, compounds 1-4 have a central molecular moiety, which is asingle steviol base, and glucopyranosyl residues attached to the C13 andC19 atoms of the steviol base, according to the atom numbering on thebase shown below. That is, glucopyranosyl residues represent groups R₂and R₁ in the following formula:

Compounds 1-4 can be characterized by having a first group of fourglucopyranose residues attached via the number 13 carbon (C13) of thesteviol moiety. That is, R₂ is a group (first group) having fourglucopyranosyl residues. The first group of four glucopyranose residuescan have a branched (non-linear) structure, meaning that at least twoglucopyranose residues are connected to a single glucopyranose residue.Compounds 1-4 can also be characterized by having a second group of twoor three glucopyranose residues attached via the number 19 carbon (C19)of the steviol moiety. That is, R₁ is a group having two or threeglucopyranosyl residues. The second group of two or three glucopyranoseresidues can have a linear or branched structure. In this regard, thecompounds can be characterized as having a total of six glucopyranoseresidue (as in compounds 1 and 2), or a total of seven glucopyranoseresidues (as in compounds 3 and 4).

The molecular weight of the fully protonated forms of compounds 1 and 2(C₅₆H₉₀O₃₃) is 1291.29, and the molecular weight of the fully protonatedforms of compounds 3 and 4 (C₆₂H₁₀₀O₃₈) is 1453.43.

Glucopyranose units of the first and second groups can be described inrelation to their positions relative to the steviol moiety, using termssuch as primary, secondary, tertiary, etc. For example, in the firstgroup (R₂), an ether linkage can attach the 1 C of the primaryglucopyranose residue to the C13 of the steviol moiety. A secondaryglucopyranose residue can be attached to the primary glucopyranose. Thatis, one glucopyranose residue can be present between the secondaryglucopyranose residue and the C13 of the steviol moiety. Compounds 2 and4 exemplify compounds having two secondary glucopyranose residuesattached to the primary glucopyranose residue. Compounds 1 and 3exemplify compounds having three secondary glucopyranose residuesattached to the primary glucopyranose residues. A tertiary glucopyranoseresidue can be attached to a secondary glucopyranose. That is, twoglucopyranose residues can be present between a tertiary glucopyranoseresidue and the C13 of the steviol moiety. Compounds 2 and 4 exemplifycompounds having one tertiary glucopyranose residue attached to asecondary glucopyranose residue.

Glucopyranose units of the first group (R₂) can also be described bytheir chemical linkages to each other. Chemical linkages in the firstgroup can include 1→2 glycosidic, 1→3 glycosidic linkage, and 1→6glycosidic linkages. Compounds 1 and 3 exemplify compounds having 1→2glycosidic, 1→3 glycosidic linkage, and 1→6 glycosidic linkages betweenthe secondary glucopyranose residues and the primary glucopyranoseresidue. Compounds 2 and 4 exemplify compounds having 1→2 glycosidic,and 1→3 glycosidic linkage, between the secondary glucopyranose residuesand the primary glucopyranose residue, and a 1→6 glycosidic linkagebetween the tertiary glucopyranose residue and a secondary glucopyranoseresidue.

In the second group (R₁), an ether linkage can attach the 1 C of theprimary glucopyranose residue to the C19 of the steviol moiety. One ormore secondary glucopyranose(s) residue can be attached to the primaryglucopyranose in the second group. Compounds 1 and 2 exemplify compoundshaving one secondary glucopyranose residue attached to the primaryglucopyranose residue. Compounds 3 and 4 exemplify compounds having twosecondary glucopyranose residues attached to the primary glucopyranoseresidues.

Glucopyranose units of the second group (R₁) can also be described bytheir chemical linkages to each other. Chemical linkages in the secondgroup can include 1→2 glycosidic and 1→3 glycosidic linkage linkages.Compounds 1 and 2 exemplify compounds having 1→2 glycosidic linkages,and compounds 3 and 4 exemplify compounds having 1→2 glycosidic and 1→3glycosidic linkages, between the secondary glucopyranose residue(s) andthe primary glucopyranose residue.

In some modes of practice, compounds 1-4 can be produced in afermentation process. For example, the fermentation process can use agenetically modified organism that is engineered for the production ofone or more steviol glycosides, such as RebM and RebD. In particular,compounds 1-4 can be carried out using an engineered microbial strainhaving a set of enzymes that provide a pathway for the synthesis of oneor more of compounds 1-4. One or more other steviol glycosides that aredifferent than compounds 1-4 can also be produced by the engineeredmicrobial strains or enzymatic preparations from the engineeredmicrobial strains

An engineered microbe useful for the production of compounds 1-4expresses the following enzymes: geranylgeranyl diphosphate synthase(GGPPS), ent-copalyl diphosphate synthase (CDPS), kaurene oxidase (KO),kaurene synthase (KS); steviol synthase (KAH), cytochrome P450 reductase(CPR), UGT74G1. UGT76G1, UGT91 d2, and a EUGT11. WO 2014/122227describes an engineered yeast strain that express these enzymes. TheUGT74G1 enzyme functions as a uridine 5′-diphospho glucosyl:steviol19-COOH transferase and a uridine 5′-diphospho glucosyl:steviol-13-O-glucoside 19-COOH transferase. The UGT76G1 enzyme is astevia uridine diphosphate dependent glycosyltransferase that catalyzesseveral glycosylation reactions on the steviol backbone. The UGT76G1enzyme can catalyze glycosylation of steviol and steviol glycosides atthe 19-0 position or the 13-0 position. The UGT91 D2 and EUGT11 enzymescan function as a uridine 5′-diphospho glucosyl: steviol-13-O-glucosidetransferases (also referred to as a steviol-13-monoglucoside1,2-glucosylase), transferring a glucose moiety to the C-2′ of the13-O-glucose of the acceptor molecule, steviol-13-O-glucoside, or asuridine 5′-diphospho glucosyl: rubusoside transferases transferring aglucose moiety to the C-2′ of the 13-O-glucose of the acceptor molecule,rubusoside, to produce stevioside. The EUGT11 enzyme also can transfer aglucose moiety to the C-2′ of the 19-O-glucose of the acceptor molecule,rubusoside, to produce a 19-0-1,2-diglycosylated rubusoside.

Fermentation can be carried out under conditions and in medium suitablefor production of compounds 1-4. Other steviol glycosides can beproduced by the engineered microbe, such as rebaudioside M, rebaudiosideD, rebaudioside A, and rebaudioside B. Compounds 1-4 can be produced inamounts less than the amounts of steviol glycosides such as rebaudiosideM and rebaudioside D. Fermentation conditions generally use oxygen(aerobic conditions), a lower pH, a carbon source, and a nutrient(nitrogen) base. Fermentation can be carried out using a fed batch orcontinuous process.

Fermentation can be carried out using a first growth phase in basemedium, followed by a longer feeding phase using a glucose-containingdefined feed medium (with trace metals, vitamins, and salts). Thefermentation minimal medium includes glucose (5 g/L), ammonium sulfate(5 g/L), potassium dihydrogenphosphate (3 g/L), magnesium sulphate (0.5g/L), trace elements, and vitamins (e.g., see, Verduyn, C. et al. (1992)Yeast 8, 501-517). The pH of the fermentation media can kept at about pH5 and the temperature at about 30° C.

Optionally, fermentation can be carried out in media containingsteviol-13-O-glucoside or steviol-19-O-glucoside. Using this media, themicroorganism contains and expresses genes encoding a functional EUGT11, a functional UGT74G1, a functional UGT85C2, a functional UGT76G1, anda functional UGT91 D2. Compounds 1-4, rebaudioside A, rebaudioside D,and rebaudioside M may be obtained from the fermentation media.

As another option, fermentation can be carried out in media containingrubusoside. Using this media, the microorganism contains and expressesgenes encoding a functional EUGT1 1, a functional UGT76G1, and afunctional UGT91 D2. Compounds 1-4, rebaudioside A, D, and M may beobtained from the fermentation media.

As another option, preparation of compounds 1-4 can be carried out usingan enzyme preparation from one or more genetically engineeredorganism(s), such as an organism described herein. For example, in onemode of practice, a genetically engineered microbe expressinggeranylgeranyl diphosphate synthase (GGPPS), ent-copalyl diphosphatesynthase (CDPS), kaurene oxidase (KO), kaurene synthase (KS); steviolsynthase (KAH), cytochrome P450 reductase (CPR), UGT74G1, UGT76G1, UGT91d2, and EUGT11 enzymes is used to make an enzyme composition. Forexample, the organism can be treated with reagents that disrupt cellmembranes to release the enzymes into a composition, or if enzymes aresecreted into a growth media for the organism, the media can be used toprepare the composition. The enzyme-containing composition is thencontacted with one or more precursor compounds (e.g., a steviolglycoside precursor) which is subjected to at least one enzymaticreaction, or typically multiple enzymatic reactions through a series ofintermediates, to provide a composition that includes compounds 1-4.

Alternatively, an enzyme composition is prepared by combining cellularextracts from multiple engineered organisms, each organism expressingless than a desired number of enzymes (e.g., one or two) for theenzymatic conversion of a steviol glycoside precursor to compounds 1-4.Extracts from the multiple organisms can be combined for preparation ofthe enzymatic composition.

Following a period of fermentation a composition containing steviolglycosides including one or more of compounds 1-4 can be obtained fromthe culture media using various techniques. In some embodiments, acompound such as permeabilizing agent can be added to the fermentationmedia to enhance removal of the steviol glycosides from the cell andinto the media.

The fermentation media can then be centrifuged or filtered to remove theengineered cells. The fermentation media can optionally be treated toremove low molecular weight components (glucose, basic nutrients, andsalts), such as by membrane dialysis. Depending on a desired use, acomposition comprising compounds 1-4, optionally with other steviolglycosides, can be used.

If it is desired to provide a composition with steviol glycosidesincluding compounds 1-4 in enriched or purified form, or where compounds1-4 are separated from other steviol glycosides, or separated from oneanother, further purification can be carried out. Such enrichment orpurification of steviol glycoside components can be carried out onliquid fermentation media, or the fermentation media can then be drieddown prior to purification. For example, fermentation media can be drieddown using lyophilization to form a dry composition (e.g., powder orflakes) including steviol glycosides with compounds 1-4 that can besubsequently processed.

In some modes of practice, dried fermentation broth enriched for steviolglyosides including compounds 1-4, is used as the starting material forpurification. For example, a solvent or solvent combination can be addedto the dried fermentation broth to dissolve or suspend material thatincludes the steviol glycosides. An exemplary combination for dissolvingthe steviol glycosides is a mixture of water and an alcohol (e.g., 50:50ethanol:water). To facilitate dissolving or suspending, the dried brothmaterials can be heated at a temperature above room temperature, such asin the range of 40° C.-60° C. Mechanical disruption of the dried brothmaterials can also be performed, such as by sonication. The dissolved orsuspended broth materials can be filtered using a micron or sub-micronprior to further purification, such as by preparative chromatography.

Dried fermentation broth enriched for steviol glycoside compounds can besubjected to purification, such as by reverse phase liquidchromatography. A suitable resin can be used to retain steviol glycosidecompounds in the column, with removal of hydrophilic compounds which getwashed through the column with a liquid such as water. Elution ofsteviol glycosides including compounds 1-4 from the column can beaccomplished a suitable solvent or solvent combination such asacetonitrile or methanol.

Elution of steviol glycosides including compounds 1-4 from a reversephase column can yield a composition which can be useful for any one ofa variety of purposes. For example, the a purified composition withcompounds 1-4 can be sued as a sweetener composition for oral ingestionor oral use. The composition can be defined with regards to the steviolglycosides in the composition.

For example, compounds 1, 2, 3, and 4 can be defined with regards to the“total steviol glycosides” present in the composition. The “totalsteviol glycosides” refers all the steviol glycosides present in thecomposition, including steviol glycosides compounds 1, 2, 3, and 4, andsteviol glycosides that are different than compounds 1, 2, 3, and 4.Total steviol glycosides can be defined in terms of steviol glycosidetype and amount.

Exemplary steviol glycosides that are different than compounds 1, 2, 3,and 4 include, but are not limited to, rebaudioside M, rebaudioside D,rebaudioside A, rebaudioside B, rebaudioside N, and stevioside. Theseother steviol glycosides may be produced in a fermentation process alongwith compounds 1-4. The amounts of steviol glycosides in the compositioncan be expressed in relation to one another, or to the total amount ofsteviol glycosides, such as by a weight percentage of the total amountof steviol glycosides, or a ratio, or range of ratios, expressed asweight percent, or molar percent.

Total steviol glycosides (TSG) is calculated as the sum of the contentof all steviol glycosides in a composition on a dry (anhydrous) basis.Unless expressed herein otherwise, an “amount” of steviol glycoside willrefer to the percentage by weight (% wt) of the steviol glycoside, orcombination thereof.

In some preparations, any one of compounds 1, 2, 3, or 4 is present inthe composition in the range of about 0.05% to about 5 (wt) of the totalamount steviol glycosides in the composition. Compound 1 can be the mostabundant of compounds 1, 2, 3, and 4, and can be present in the range ofabout 2% to about 4.5%, about 3% to about 4.25%, or about 3.5% to about4.0% of the total amount steviol glycosides in the composition. Compound4 can be the least abundant of compounds 1, 2, 3, and 4, and be presentin the range of about 0.05% to about 1%, about 0.1% to about 0.5%, orabout 0.15% to about 0.25% of the total amount of steviol glycosides inthe composition. Compounds 2 and 3 can present in amounts, individually,between the amounts of compounds 1 and 4, such as in the range of about0.1% to about 1.5%, about 0.25% to about 0.1%, or about 0.4% to about0.8% of the total amount steviol glycosides in the composition.

The combined amount of compounds 1, 2, 3, or 4 can also be expressed inrelation to the total amount steviol glycosides in the composition. Forexample the combined amount of compounds 1, 2, 3, and 4, can be presentin the range of about 0.5% to about 10%, about 1% to about 8%, about 2%to about 7%, or about 4% to about 6% of the total amount steviolglycosides in the composition.

As discussed herein, the composition can include one or more othersteviol glycosides that are different than compounds 1, 2, 3, or 4.These other steviol glycosides can be retained in a composition if theyare not purified away from the compounds 1, 2, 3, and 4. For example,other steviol glycosides can be present along with compounds 1, 2, 3,and 4 if the other steviol glycosides are produced in a commonfermentation process. Exemplary steviol glycosides include those such asrebaudioside M, rebaudioside D, rebaudioside A, rebaudioside B,rebaudioside N, and stevioside. In some embodiments, the steviolglycosides rebaudioside M and rebaudioside D can be produced by anengineered organism as the predominant steviol glycosides, and thereforecan represent the major portion of the steviol glycosides in thecomposition that includes compounds 1, 2, 3, or 4. Rebaudioside M orrebaudioside D can, in some embodiments, be present in the compositionan amount greater than any one of compounds 1, 2, 3, or 4. For example,rebaudioside M or rebaudioside D can be present in an amount in therange of about 10 times to about 500 times, about 25 times to about 250times, or about 50 times to about 200 times greater than any one ofcompounds 1, 2, 3, or 4.

A steviol glycoside composition that includes compounds 1, 2, 3, or 4.can optionally be expressed in terms of amounts of rebaudioside M andrebaudioside D. For example, rebaudioside M and rebaudioside D can bepresent in the composition in a total amount of about 90% (wt) orgreater, about 92.5% (wt) or greater, or 95% (wt) or greater, of a totalamount steviol glycosides in the composition. Rebaudioside M can be thepredominant steviol glycoside in the composition, and can be present,for example, in an amount in the range of about 45% to about 70%, about50% to about 65%, or about 52.5% to about 62.5% of the total amountsteviol glycosides in the composition. Rebaudioside D can be in anamount less than Rebaudioside M, such as in an amount in the range ofabout 25% to about 50%, about 30% to about 45%, or about 32.5% to about42.5% of the total amount steviol glycosides in the composition.

The composition can optionally be expressed in terms of amounts of otherknown steviol glycosides that are present in minor amounts. For example,composition can include one or more of rebaudioside A, rebaudioside B,or stevioside in an amount of about 1% (wt) or less, about 0.5% (wt) orless, or about 0.25% (wt) or less, of a total amount steviol glycosidesin the composition.

The composition can optionally be expressed in terms of theconcentration of one or more steviol glycoside(s). Beneficially, it hasbeen founds that compound(s) 1, 2, 3, and/or 4, can improve solubilityof steviol glycosides in an aqueous solution, and therefore compositionscan be prepared having a greater concentration of steviol glycosides insolution. As used herein “instantaneous solubility” refers to thesolubility of a steviol glycoside, or mixture of steviol glycosides,that are vigorously mixed with deionized water at room temperature (25°C.). As used herein “equilibrium solubility” refers to the solubility ofa steviol glycoside, or mixture of steviol glycosides, that arevigorously mixed with deionized water at 80° C. for 15 minutes, cooledto room temperature (25° C.), and then observed up to 4 days. Clearsolutions without precipitates are considered soluble. Unless indicatedotherwise herein, the term “solubility” refers to “equilibriumsolubility.”

In the absence of compound(s) 1, 2, 3, and/or 4, rebaudioside D has avery low instantaneous solubility (less than 0.08% at room temperature)in water. Upon heating to 80° C. for 15 minutes, rebaudioside D has anequilibrium solubility 0.08% for at least 4 days at room temperature.Rebaudioside M has a higher solubility than rebaudioside D. Theinstantaneous solubility of rebaudioside M is about 0.13%, and itsequilibrium solubility is about 0.2% at room temperature.

In experimental studies associated with the disclosure, the addition ofcompounds 1-4, significantly improves the aqueous solubility ofrebaudioside M and rebaudioside D in a composition. For example, asteviol glycoside composition having a mixture of rebaudioside M,rebaudioside D, and 1, 2, 3, and 4, is at least 0.37% (wt)instantaneously soluble at room temperature in water. In somepreparations, composition may contain about 0.14% rebD and about 0.21%rebM in soluble form. It is understood that steviol glycoside other thanrebaudioside M and rebaudioside D have poor solubility in an aqueouscomposition, and therefore, it is also within the scope of the inventionto use one or more of compounds 1-4 to improve the solubility of othersteviol glycosides other than rebaudioside M and rebaudioside D.

Therefore, the presence of compound(s) 1, 2, 3, and/or 4 can improve thesolubility of one or more steviol glycosides by 5% or greater, 10% orgreater, 15% or greater, 20% or greater, 25% or greater, 30% or greater,35% or greater, 40% or greater, 45% or greater, 50% or greater, 55% orgreater, 60% or greater, 65% or greater, or 70% or greater, such asabout 75%. While compound 1, 2, 3, and/or 4, can improve the solubilityof one or more other steviol glycosides when the compounds are presentin small amounts, for example, less than 6%, of the total amount steviolglycosides in the composition, such as from about 0.5% to about 6%, orabout 4% to about 6%, they can be present in amounts greater than 6%,such as greater than 6%, greater than about 8% or greater than about10%, to provide an even greater enhancement of solubility of steviolglycosides that are different than compounds 1, 2, 3, and 4.

In some modes of practice, compound(s) 1, 2, 3, and/or 4, can beenriched in a composition. The term “enriched” refers to an increase inthe amount of compound 1, 2, 3, and/or 4, relative to one or more othercompounds that are present in a composition. For example, compound 1, 2,3, and/or 4, can be enriched from a fermentation media in which thecompounds were produced. In modes of practice, compound 1, 2, 3, and/or4, can be enriched by the reduction or elimination of components thatare not steviol glycosides from the fermentation composition, such as byusing enrichment methods as described herein. A composition that isenriched for compound 1, 2, 3, and/or 4 can be combined with anothersteviol glycoside composition to improve solubility of those steviolglycosides that are not compounds 1, 2, 3, or 4.

In other modes of practice, compound(s) 1, 2, 3, and/or 4, can beenriched in a composition relative to other steviol glycosides. Forexample, a composition of steviol glycosides can be enriched to increasethe amount(s) of compound 1, 2, 3, and/or 4 relative to one or moreother steviol glycosides in the composition. Compound 1, 2, 3, and/or 4may be enriched on the basis of their molecular weight, which can behigher than other steviol glycosides, such as Reb D and Reb M.

In exemplary modes of practice, high pressure liquid chromatography isused to prepare a steviol glycoside composition that is enriched forcompound(s) 1, 2, 3, and/or 4 relative to other steviol glycosides incomparison to the amounts of steviol glycosides produced duringfermentation. For example, a steviol glycoside composition can includecompound 1, 2, 3, and/or 4 in an amount greater than 6%, greater thanabout 8%, greater than about 10%, greater than about 15%, greater thanabout 20%, greater than about 20%, greater than about 30%, greater thanabout 35%, greater than about 40%, greater than about 45%, greater thanabout 50%, greater than about 55%, greater than about 60%, greater thanabout 65%, greater than about 70%, greater than about 75%, greater thanabout 80%, greater than about 85%, greater than about 90%, greater thanabout 95%, relative to the total amount of steviol glycosides in thecomposition.

For example, following an enrichment process, the steviol glycosidecomposition can have a combined amount of Compounds 1, 2, 3, and/or 4 inthe range of about 10-30%, and a combined amount of other steviolglycosides, such as Reb D and Reb M in the range of about 70-90%.

In yet other modes of practice, compounds 1, 2, 3, and/or 4 are purifiedfrom other steviol glycosides to provide a composition comprisingcompounds 1, 2, 3, and/or 4 essentially free of other components (i.e.,essentially free of other steviol glycoside and non-steviol glycosidecompounds). Such a purified composition can be useful as an additive toother steviol glycoside composition(s), such as to increase the aqueoussolubility of the other steviol glycosides to form a composition withhigher steviol glycoside concentration.

Accordingly, embodiments of the invention provide a method of enhancingthe solubility of a steviol glycoside in an aqueous composition whichincludes a step of providing an aqueous composition comprising first andsecond steviol glycosides. In the composition the first steviolglycoside has a branched chain of four glucose units attached to an atomof a cyclooctane group of a steviol moiety of the first steviolglycoside. Also the second steviol glycoside is different than the firststeviol glycoside. For example, in the step of providing, the firststeviol glycoside can be produced along with the second steviolglycoside, such as when the first and second steviol glycosides areprepared by an enzymatic process (e.g., within a cell, or in a cell-freesystem) Alternatively, the first steviol glycoside can be added to acomposition that has the second steviol glycoside. The second steviolglycoside has a solubility in an aqueous composition that lacks thefirst steviol glycoside that is lower than a solubility of the secondsteviol glycoside in an aqueous composition that includes the firststeviol glycoside. In other words, the solubility of the second steviolglycoside increases when the first steviol glycoside is present.

Accordingly, other embodiments of the invention provides a method ofenhancing the solubility of a steviol glycoside in an aqueouscomposition comprising a step of providing an aqueous compositioncomprising first and second steviol glycosides, wherein the secondsteviol glycoside is selected from the group consisting of rebaudiosideA, rebaudioside B, rebaudioside M, rebaudioside D, rebaudioside I,rebaudioside Q, rebaudioside N, and stevioside. For example, in the stepof providing, the first steviol glycoside can be produced along with thesecond steviol glycoside, such as when the first and second steviolglycosides are prepared by an enzymatic process (e.g., within a cell, orin a cell-free system). Alternatively, the first steviol glycoside canbe added to a composition that has the second steviol glycoside. Thefirst steviol glycoside is different from the second steviol glycoside,and has a higher molecular weight than rebaudioside M. Compounds 1-4exemplify the first steviol glycoside. Also, the second steviolglycoside has a solubility in an aqueous composition that lacks thefirst steviol glycoside that is lower than a solubility of the secondsteviol glycoside in an aqueous composition that includes the firststeviol glycoside. In other words, the solubility of the second steviolglycoside increases when the first steviol glycoside is present.

Compounds 1-4 can be purified using with preparative liquidchromatography, such as high pressure liquid chromatography (HPLC) orultra-high pressure liquid chromatography (UHPLC). A steviol glycosidecomposition with compounds 1-4 can be dissolved in a mobile phase, suchas a mixture of water and an alcohol (e.g., methanol) at a desired ratio(e.g., 60% water, 40% methanol, v/v). The composition can also be heatedto enhance dissolution of the steviol glycoside material, such asheating at about 50° C. The solution can also be filtered prior toinjection into the column, such as using a 0.2 μm filter. PhenomenexKinetex XB-C18 5 μm, core-shell silica solid support, and stationaryphase of C18 with iso-butyl side chains and TMS endcapping. The flowrate through the column can be based on column properties (such as about20 mL/min), with a maximum pressure of 400 bar. Compounds 1-4 can beidentified by their elution times from the column. In exemplary flowconditions Compounds 1-4 can elute from the column within 60 minutes.One of skill in the art will appreciate that the elution times for theCompounds 1-4 can vary with changes in solvent and/or equipment. Thoseexperienced in art will also understand that although the processdescribed below assumes certain order of the described steps, this ordercan be altered in some cases.

Sweetener compositions (also referred to as sweetening compositions), asused herein, refers to compositions that include one or more steviolglycosides, including one or more of compounds 1, 2, 3, and/or 4. Forexample, a sweetener composition can include compound(s) 1, 2, 3, and/or4 along with another steviol glycoside such as RebM and/or RebD. Ifmultiple steviol glycosides are present in the sweetener compositions,in some embodiments compounds 1, 2, 3, and/or 4 can be present in minoramounts in the composition (e.g., less than about 25%, less than about20%, less than about 15%, or less than about 10%), of the total amountof steviol glycosides in the composition. One or more other steviolglycoside(s) such as RebM and/or RebD can be present in a major amountin the composition, such as greater than about 75%, greater than about80%, greater than about 85%, greater than about 90%, or greater thanabout 95%, of the total amount of steviol glycosides in the composition.

The sweetener composition can optionally include another sweetener, anadditive, a liquid carrier, or combinations thereof. Sweetenercompositions are used to sweeten other compositions (sweetenablecompositions) such as foods, beverages, medicines, oral hygienecompositions, nutraceuticals, and the like.

Sweetenable compositions, as used herein, mean substances which arecontacted with the mouth of man or animal, including substances whichare taken into but subsequently ejected from the mouth (such as amouthwash rinse) and substances which are drunk, eaten, swallowed orotherwise ingested, and are suitable for human or animal consumptionwhen used in a generally acceptable range. Sweetenable compositions areprecursor compositions to sweetened compositions and are converted tosweetened compositions by combining the sweetenable compositions with atleast one sweetening composition and optionally one or more othersweetenable compositions and/or other ingredients.

Sweetened compositions, as used herein, mean substances that are derivedfrom constituents including at least one sweetenable composition and atleast one sweetener composition. In some modes of practice, a sweetenedcomposition may be used itself as a sweetening composition to sweetenstill yet further sweetenable compositions. In some modes of practice, asweetened composition may be used as a sweetenable composition that isfurther sweetened with one or more additional sweetening compositions.For example, a beverage with no sweetener component is a type ofsweetenable composition. A sweetener composition comprising at least oneof compounds 1, 2, 3, and/or 4, optionally along with another steviolglycoside, such as RebM and/or RebD, can be added to the un-sweetenedbeverage, thereby providing a sweetened beverage. The sweetened beverageis a type of sweetened composition.

In some preparations, steviol glycosides, including compounds 1, 2, 3,and/or 4, provide the sole sweetener component in a sweeteneingcomposition.

In some embodiments, a sweetening composition comprises steviolglycosides, including compounds 1, 2, 3, and/or 4, in an amounteffective to provide a sweetness strength equivalent to a specifiedamount of sucrose. The amount of sucrose in a reference solution may bedescribed in degrees Brix (°Bx). One degree Brix is 1 gram of sucrose in100 grams of solution and represents the strength of the solution aspercentage by weight (% w/w). For example, a sweetener compositioncontains one or more steviol glycosides, including compounds 1, 2, 3,and/or 4, in an amount effective to provide a sweetness equivalent fromabout 0.50 to 14 degrees Brix of sugar when present in a sweetenedcomposition, such as, for example, from about 5 to about 11 degreesBrix, from about 4 to about 7 degrees Brix, or about 5 degrees Brix.

The amount of steviol glycosides in the sweetener composition may vary.Steviol glycosides, including compounds 1, 2, 3, and/or 4, can bepresent in a sweetener composition in any amount to impart the desiredsweetness when the sweetener composition is incorporated into asweetened composition. For example, Reb M and/or Reb D, along with oneor more of compounds 1, 2, 3, and/or 4, are present in the sweetenercomposition in an amount effective to provide total steviol glycosideconcentration from about 1 ppm to about 10,000 ppm when present in asweetened composition, In another embodiment, the steviol glycosides arepresent in the sweetener composition in an amount effective to provide asteviol glycoside concentration in the range of about 10 ppm to about1,000 ppm, more specifically about 10 ppm to about 800 ppm, about 50 ppmto about 800 ppm, about 50 ppm to about 600 ppm, or about 200 ppm toabout 500 ppm. Unless otherwise expressly stated, ppm is on a weightbasis.

In some embodiments, a sweetener composition having the steviolglycosides, including compounds 1, 2, 3, and/or 4, also contain one ormore additional non-steviol glycoside sweetener compound(s). Thenon-steviol glycoside sweetener compounds can be any type of sweetener,for example, a sweetener obtained from a plant or plant product, or aphysically or chemically modified sweetener obtained from a plant, or asynthetic sweetener.

For example, exemplary non-steviol glycoside sweeteners include sucrose,fructose, glucose, erythritol, maltitol, lactitol, sorbitol, mannitol,xylitol, tagatose, trehalose, galactose, rhamnose, cyclodextrin (e.g.,a-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin), ribulose, threose,arabinose, xylose, lyxose, allose, altrose, mannose, idose, lactose,maltose, invert sugar, isotrehalose, neotrehalose, palatinose orisomaltulose, erythrose, deoxyribose, gulose, idose, talose,erythrulose, xylulose, psicose, turanose, cellobiose, glucosamine,mannosamine, fucose, fuculose, glucuronic acid, gluconic acid,glucono-lactone, abequose, galactosamine, xylo-oligosaccharides(xylotriose, xylobiose and the like), gentio-oligoscaccharides(gentiobiose, gentiotriose, gentiotetraose and the like),galacto-oligosaccharides, sorbose, ketotriose (dehydroxyacetone),aldotriose (glyceraldehyde), nigero-oligosaccharides,fructooligosaccharides (kestose, nystose and the like), maltotetraose,maltotriol, tetrasaccharides, mannan-oligosaccharides,malto-oligosaccharides (maltotriose, maltotetraose, maltopentaose,maltohexaose, maltoheptaose and the like), dextrins, lactulose,melibiose, raffinose, rhamnose, ribose, isomerized liquid sugars such ashigh fructose corn/starch syrup (HFCS/HFSS) (e.g., HFCS55, HFCS42, orHFCS90), coupling sugars, soybean oligosaccharides, glucose syrup andcombinations thereof. D- or L-configurations can be used whenapplicable.

The steviol glycosides (including compounds 1, 2, 3, and/or 4), andcarbohydrate sweetener may be present in any weight ratio, such as, forexample, from about 1:14,000 to about 100:1, such as, for example, about1:100. Carbohydrates are present in the sweetener composition in anamount effective to provide a concentration from about 100 ppm to about140,000 ppm when present in a sweetened composition, such as, forexample, a beverage.

In other embodiments, the sweetener composition including the steviolglycosides (including compounds 1, 2, 3, and/or 4), additionally includeone or more synthetic sweeteners. Preferably, a synthetic has asweetness potency greater than sucrose, fructose, and/or glucose, yethas less calories than sucrose, fructose, and/or glucose. Exemplarysynthetic non-steviol glycoside sweeteners include include sucralose,potassium acesulfame, acesulfame acid and salts thereof, aspartame,alitame, saccharin and salts thereof, neohesperidin dihydrochalcone,cyclamate, cyclamic acid and salts thereof, neotame, advantame,glucosylated steviol glycosides (GSGs) and combinations thereof. Inembodiments where the sweetener composition includes the steviolglycosides (including compounds 1, 2, 3, and/or 4) and syntheticsweetener, the synthetic sweetener can be present in an amount effectiveto provide a concentration from about 0.3 ppm to about 3,500 ppm whenpresent in a sweetened composition, such as, for example, a beverage.

The sweetener compositions can be customized to provide a desiredcalorie content. For example, sweetener compositions can be“full-calorie”, such that they impart the desired sweetness when addedto a sweetenable composition (such as, for example, a beverage) and haveabout 120 calories per 8 oz serving. Alternatively, sweetenercompositions can be “mid-calorie”, such that they impart the desiredsweetness when added to a sweetenable composition (such as, for example,as beverage) and have less than about 60 calories per 8 oz serving. Inother embodiments, sweetener compositions can be “low-calorie”, suchthat they impart the desired sweetness when added to a sweetenablecomposition (such as, for example, as beverage) and have less than 40calories per 8 oz serving. In still other embodiments, the sweetenercompositions can be “zero-calorie”, such that they impart the desiredsweetness when added to a sweetenable composition (such as, for example,a beverage) and have less than 5 calories per 8 oz. serving.

The weight ratio of the total amount of sweetener compositions used tosweeten a sweetened composition can vary over a wide range. In manyembodiments, this weight ratio is in the range from 1:10,000 to 10:1.

In addition to the steviol glycosides (including compounds 1, 2, 3,and/or 4) the sweetener compositions can optionally include a liquidcarrier, binder matrix, additional additives, and/or the like. In someembodiments, the sweetener composition contains additives including, butnot limited to, carbohydrates, polyols, amino acids and theircorresponding salts, poly-amino acids and their corresponding salts,sugar acids and their corresponding salts, nucleotides, organic acids,inorganic acids, organic salts including organic acid salts and organicbase salts, inorganic salts, bitter compounds, flavorants and flavoringingredients, astringent compounds, proteins or protein hydrolysates,surfactants, emulsifiers, weighing agents, gums, antioxidants,colorants, flavonoids, alcohols, polymers and combinations thereof. Insome embodiments, the additives act to improve the temporal and flavorprofile of the sweetener to provide a sweetener composition with afavorable taste, such as a taste similar to sucrose.

In one embodiment, the sweetener compositions with steviol glycosides(including compounds 1, 2, 3, and/or 4) contain one or more polyols. Theterm “polyol”, as used herein, refers to a molecule that contains morethan one hydroxyl group. In some embodiments, a polyol may be a diol,triol, or a tetraol which contains 2, 3, and 4 hydroxyl groupsrespectively. A polyol also may contain more than 4 hydroxyl groups,such as a pentaol, hexaol, heptaol, or the like, which contain 5, 6, 7,or even more hydroxyl groups, respectively. Additionally, a polyol alsomay be a sugar alcohol, polyhydric alcohol, polymer comprising OHfunctionality, or polyalcohol which is a reduced form of a carbohydrate,wherein a carbonyl group (aldehyde or ketone, reducing sugar) has beenreduced to a primary or secondary hydroxyl group.

Exemplary polyols include erythritol, maltitol, mannitol, sorbitol,lactitol, xylitol, isomalt, propylene glycol, glycerol (glycerin),threitol, galactitol, palatinose, reduced isomalto-oligosaccharides,reduced xylo-oligosaccharides, reduced gentio-oligosaccharides, reducedmaltose syrup, reduced glucose syrup, and sugar alcohols or any othercarbohydrates capable of being reduced which do not adversely affect thetaste of the sweetener composition.

Exemplary amounts of polyol provide a concentration in the range ofabout 100 ppm to about 250,000 ppm when present in a sweetenedcomposition, more specifically about 400 ppm to about 80,000 ppm, orabout 5,000 ppm to about 40,000 ppm, based on the total weight of thesweetened composition.

Exemplary amino acid additives include any compound comprising at leastone amino functionality and at least one acid functionality. Examplesinclude, but are not limited to, aspartic acid, arginine, glycine,glutamic acid, proline, threonine, theanine, cysteine, cystine, alanine,valine, tyrosine, leucine, arabinose, trans-4-hydroxyproline,isoleucine, asparagine, serine, lysine, histidine, ornithine,methionine, carnitine, aminobutyric acid (α-, β-, and/or δ-isomers),glutamine, hydroxyproline, taurine, norvaline, sarcosine, and their saltforms such as sodium or potassium salts or acid salts.

Exemplary amounts of amino acid provide a concentration in the range ofabout 10 ppm to about 50,000 ppm, or more specifically about 1,000 ppmto about 10,000 ppm, about 2,500 ppm to about 5,000 ppm, or about 250ppm to about 7,500 ppm, based on the total weight of the sweetenedcomposition.

Exemplary sugar acid additives include, but are not limited to, aldonic,uronic, aldaric, alginic, gluconic, glucuronic, glucaric, galactaric,galacturonic, and salts thereof (e.g., sodium, potassium, calcium,magnesium salts or other physiologically acceptable salts), andcombinations thereof.

Exemplary nucleotide additives include, but are not limited to, inosinemonophosphate (“IMP”), guanosine monophosphate (“GMP”), adenosinemonophosphate (“AMP”), cytosine monophosphate (CMP), uracilmonophosphate (UMP), inosine diphosphate, guanosine diphosphate,adenosine diphosphate, cytosine diphosphate, uracil diphosphate, inosinetriphosphate, guanosine triphosphate, adenosine triphosphate, cytosinetriphosphate, uracil triphosphate, alkali or alkaline earth metal saltsthereof, and combinations thereof. The nucleotides described herein alsomay comprise nucleotide-related additives, such as nucleosides ornucleic acid bases (e.g., guanine, cytosine, adenine, thymine, uracil).In some embodiments, a nucleotide can be present in the sweetenercomposition to provide a concentration in the range of about 5 ppm toabout 1,000 ppm based on the total weight of the sweetened composition.

Exemplary organic acid additives include any compound which comprises a—COOH moiety, such as, for example, C2-C30 carboxylic acids, substitutedhydroxyl C2-C30 carboxylic acids, butyric acid (ethyl esters),substituted butyric acid (ethyl esters), benzoic acid, substitutedbenzoic acids (e.g., 2,4-dihydroxybenzoic acid), substituted cinnamicacids, hydroxyacids, substituted hydroxybenzoic acids, anisic acidsubstituted cyclohexyl carboxylic acids, tannic acid, aconitic acid,lactic acid, tartaric acid, citric acid, isocitric acid, gluconic acid,glucoheptonic acids, adipic acid, hydroxycitric acid, malic acid,fruitaric acid (a blend of malic, fumaric, and tartaric acids), fumaricacid, maleic acid, succinic acid, chlorogenic acid, salicylic acid,creatine, caffeic acid, bile acids, acetic acid, ascorbic acid, alginicacid, erythorbic acid, polyglutamic acid, glucono delta lactone, andtheir alkali or alkaline earth metal salt derivatives thereof. Inaddition, the organic acid additives also may be in either the D- orL-configuration. Salts of organic acids are also contemplated. Inexemplary embodiments, an organic acid or salt thereof is present in thesweetener composition in an amount from about 10 ppm to about 5,000 ppm,based on the total weight of the sweetener composition.

Exemplary inorganic acid additives include, but are not limited to,phosphoric acid, phosphorous acid, polyphosphoric acid, hydrochloricacid, sulfuric acid, carbonic acid, sodium dihydrogen phosphate, andalkali or alkaline earth metal salts thereof (e.g., inositolhexaphosphate Mg/Ca).

Exemplary bitter compound additives include, but are not limited to,caffeine, quinine, urea, bitter orange oil, naringin, quassia, and saltsthereof.

Exemplary flavorant and flavoring ingredient additives, but are notlimited to, vanillin, vanilla extract, mango extract, cinnamon, citrus,coconut, ginger, viridiflorol, almond, menthol (including mentholwithout mint), grape skin extract, and grape seed extract. In someembodiments, a flavorant is present in the sweetener composition in anamount effective to provide a concentration from about 0.1 ppm to about4,000 ppm when present in a sweetened composition, such as, for example,a beverage, based on the total weight of the sweetened composition.

Exemplary polymer additives include, chitosan, pectin, pectic, pectinic,polyuronic, polygalacturonic acid, starch, food hydrocolloid or crudeextracts thereof (e.g., gum acacia Senegal (Fibergum™), gum acaciaseyal, carageenan), poly-L-lysine (e.g., poly-L-a-lysine orpoly-L-e-lysine), poly-L-ornithine (e.g., poly-L-a-ornithine orpoly-L-e-ornithine), polypropylene glycol, polyethylene glycol,poly(ethylene glycol methyl ether), polyarginine, polyaspartic acid,polyglutamic acid, polyethylene imine, alginic acid, sodium alginate,propylene glycol alginate, and sodium polyethyleneglycolalginate, sodiumhexametaphosphate and its salts, and other cationic polymers and anionicpolymers. In some embodiments, a polymer additive is present in thesweetener composition in an amount effective to provide a concentrationfrom about 30 ppm to about 2,000 ppm when present in a sweetenedcomposition, such as, for example, a beverage, based on the total weightof the sweetened composition.

Exemplary protein or protein hydrolysate additives include, but are notlimited to, bovine serum albumin (BSA), whey protein, soluble riceprotein, soy protein, protein isolates, protein hydrolysates, reactionproducts of protein hydrolysates, glycoproteins, and/or proteoglycanscontaining amino acids, collagen (e.g., gelatin), partially hydrolyzedcollagen (e.g., hydrolyzed fish collagen), and collagen hydrolysates(e.g., porcine collagen hydrolysate). In some embodiments, a proteinhydrosylate is present in the sweetener composition in an amounteffective to provide a concentration from about 200 ppm to about 50,000ppm when present in a sweetened composition, such as, for example, abeverage, based on the total weight of the sweetened composition.

Exemplary surfactant additives include, but are not limited to,polysorbates (e.g., polyoxyethylene sorbitan monooleate (polysorbate80), polysorbate 20, polysorbate 60), sodium dodecylbenzenesulfonate,dioctyl sulfosuccinate or dioctyl sulfosuccinate sodium, sodium dodecylsulfate, cetylpyridinium chloride (hexadecylpyridinium chloride),hexadecyltrimethylammonium bromide, sodium cholate, carbamoyl, cholinechloride, sodium glycocholate, sodium taurodeoxycholate, lauricarginate, sodium stearoyl lactylate, sodium taurocholate, lecithins,sucrose oleate esters, sucrose stearate esters, sucrose palmitateesters, sucrose laurate esters, and other emulsifiers, and the like. Insome embodiments, a surfactant additive is present in the sweetenercomposition in an amount effective to provide a concentration from about30 ppm to about 2,000 ppm when present in a sweetened composition, suchas, for example, a beverage, based on the total weight of the sweetenedcomposition.

Exemplary flavonoid additives are classified as flavonols, flavones,flavanones, flavan-3-ols, isoflavones, or anthocyanidins. Non-limitingexamples of flavonoid additives include, but are not limited to,catechins (e.g., green tea extracts such as Polyphenon™ 60, Polyphenon™30, and Polyphenon™ 25 (Mitsui Norin Co., Ltd., Japan), polyphenols,rutins (e.g., enzyme modified rutin Sanmelin™ AO (San-fi Gen F. F. I.,Inc., Osaka, Japan)), neohesperidin, naringin, neohesperidindihydrochalcone, and the like. In some embodiments, a flavonoid additiveis present in the sweetener composition in an amount effective toprovide a concentration from about 0.1 ppm to about 1,000 ppm whenpresent in sweetened composition, such as, for example, a beverage,based on the total weight of the sweetened composition.

Exemplary alcohol additives include, but are not limited to, ethanol. Insome embodiments, an alcohol additive is present in the sweetenercomposition in an amount effective to provide a concentration from about625 ppm to about 10,000 ppm when present in a sweetened composition,such as, for example, a beverage, based on the total weight of thesweetened composition.

The sweetener composition can also contain one or more functionalingredients, which provide a real or perceived heath benefit to thecomposition. Functional ingredients include, but are not limited to,saponins, antioxidants, dietary fiber sources, fatty acids, vitamins,glucosamine, minerals, preservatives, hydration agents, probiotics,prebiotics, weight management agents, osteoporosis management agents,phytoestrogens, long chain primary aliphatic saturated alcohols,phytosterols and combinations thereof.

Saponins are glycosidic plant products comprising an aglycone ringstructure and one or more sugar moieties. The combination of thenonpolar aglycone and the water soluble sugar moiety gives saponinssurfactant properties, which allow them to form a foam when shaken in anaqueous solution.

As used herein “antioxidant” refers to any substance which inhibits,suppresses, or reduces oxidative damage to cells and biomolecules.Without being bound by theory, it is believed that antioxidants inhibit,suppress, or reduce oxidative damage to cells or biomolecules bystabilizing free radicals before they can cause harmful reactions. Assuch, antioxidants may prevent or postpone the onset of somedegenerative diseases.

Examples of suitable antioxidants for embodiments of this inventioninclude, but are not limited to, vitamins, vitamin cofactors, minerals,hormones, carotenoids, carotenoid terpenoids, non-carotenoid terpenoids,flavonoids, flavonoid polyphenolics (e.g., bioflavonoids), flavonols,flavones, phenols, polyphenols, esters of phenols, esters ofpolyphenols, nonflavonoid phenolics, isothiocyanates, and combinationsthereof. In some embodiments, the antioxidant is vitamin A, vitamin C,vitamin E, ubiquinone, mineral selenium, manganese, melatonin,a-carotene, β-carotene, lycopene, lutein, zeanthin, crypoxanthin,reservatol, eugenol, quercetin, catechin, gossypol, hesperetin,curcumin, ferulic acid, thymol, hydroxytyrosol, tumeric, thyme, oliveoil, lipoic acid, glutathinone, gutamine, oxalic acid,tocopherol-derived compounds, butylated hydroxyanisole (BHA), butylatedhydroxytoluene (BHT), ethylenediaminetetraacetic acid (EDTA),tert-butylhydroquinone, acetic acid, pectin, tocotrienol, tocopherol,coenzyme Q10, zeaxanthin, astaxanthin, canthaxantin, saponins,limonoids, kaempfedrol, myricetin, isorhamnetin, proanthocyanidins,quercetin, rutin, luteolin, apigenin, tangeritin, hesperetin,naringenin, erodictyol, flavan-3-ols (e.g., anthocyanidins),gallocatechins, epicatechin and its gallate forms, epigallocatechin andits gallate forms (ECGC) theaflavin and its gallate forms, thearubigins,isoflavone phytoestrogens, genistein, daidzein, glycitein,anythocyanins, cyaniding, delphinidin, malvidin, pelargonidin, peonidin,petunidin, ellagic acid, gallic acid, salicylic acid, rosmarinic acid,cinnamic acid and its derivatives (e.g., ferulic acid), chlorogenicacid, chicoric acid, gallotannins, ellagitannins, anthoxanthins,betacyanins and other plant pigments, silymarin, citric acid, lignan,antinutrients, bilirubin, uric acid, R-a-lipoic acid, N-acetylcysteine,emblicanin, apple extract, apple skin extract (applephenon), rooibosextract red, rooibos extract, green, hawthorn berry extract, redraspberry extract, green coffee antioxidant (GCA), aronia extract 20%,grape seed extract (VinOseed), cocoa extract, hops extract, mangosteenextract, mangosteen hull extract, cranberry extract, pomegranateextract, pomegranate hull extract, pomegranate seed extract, hawthornberry extract, pomella pomegranate extract, cinnamon bark extract, grapeskin extract, bilberry extract, pine bark extract, pycnogenol,elderberry extract, mulberry root extract, wolf erry (gogi) extract,blackberry extract, blueberry extract, blueberry leaf extract, raspberryextract, turmeric extract, citrus bioflavonoids, black currant, ginger,acai powder, green coffee bean extract, green tea extract, and phyticacid, or combinations thereof. In alternate embodiments, the antioxidantis a synthetic antioxidant such as butylated hydroxytolune or butylatedhydroxyanisole, for example. Other sources of suitable antioxidants forembodiments of this invention include, but are not limited to, fruits,vegetables, tea, cocoa, chocolate, spices, herbs, rice, organ meats fromlivestock, yeast, whole grains, or cereal grains.

Particular antioxidants belong to the class of phytonutrients calledpolyphenols (also known as “polyphenolics”), which are a group ofchemical substances found in plants, characterized by the presence ofmore than one phenol group per molecule. A variety of health benefitsmay be derived from polyphenols, including prevention of cancer, heartdisease, and chronic inflammatory disease and improved mental strengthand physical strength, for example. Suitable polyphenols for embodimentsof this invention, include catechins, proanthocyanidins, procyanidins,anthocyanins, quercerin, rutin, reservatrol, isoflavones, curcumin,punicalagin, ellagitannin, hesperidin, naringin, citrus flavonoids,chlorogenic acid, other similar materials, and combinations thereof.

Numerous polymeric carbohydrates having significantly differentstructures in both composition and linkages fall within the definitionof dietary fiber. Such compounds are well known to those skilled in theart, non-limiting examples of which include non-starch polysaccharides,lignin, cellulose, methylcellulose, the hemicelluloses, β-glucans,pectins, gums, mucilage, waxes, inulins, oligosaccharides,fructooligosaccharides, cyclodextrins, chitins, and combinationsthereof.

As used herein, “fatty acid” refers to any straight chain monocarboxylicacid and includes saturated fatty acids, unsaturated fatty acids, longchain fatty acids, medium chain fatty acids, short chain fatty acids,fatty acid precursors (including omega-9 fatty acid precursors), andesterified fatty acids. As used herein, “long chain polyunsaturatedfatty acid” refers to any polyunsaturated carboxylic acid or organicacid with a long aliphatic tail. As used herein, “omega-3 fatty acid”refers to any polyunsaturated fatty acid having a first double bond asthe third carbon-carbon bond from the terminal methyl end of its carbonchain. In particular embodiments, the omega-3 fatty acid may comprise along chain omega-3 fatty acid. As used herein, “omega-6 fatty acid” anypolyunsaturated fatty acid having a first double bond as the sixthcarbon-carbon bond from the terminal methyl end of its carbon chain.

As used herein, the at least one vitamin may be single vitamin or aplurality of vitamins as a functional ingredient for the sweetener andsweetened compositions provided herein. Generally, according toparticular embodiments of this invention, the at least one vitamin ispresent in the sweetener composition or sweetened composition in anamount sufficient to promote health and wellness.

Vitamins are organic compounds that the human body needs in smallquantities for normal functioning. The body uses vitamins withoutbreaking them down, unlike other nutrients such as carbohydrates andproteins. To date, thirteen vitamins have been recognized, and one ormore can be used in the functional sweetener and sweetened compositionsherein. Suitable vitamins include, vitamin A, vitamin D, vitamin E,vitamin K, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6,vitamin B7, vitamin B9, vitamin B 12, and vitamin C. Many of vitaminsalso have alternative chemical names, non-limiting examples of which areprovided below.

In certain embodiments, the functional ingredient comprises glucosamineor chondroitin sulfate. Glucosamine, also called chitosamine, is anamino sugar that is believed to be an important precursor in thebiochemical synthesis of glycosylated proteins and lipids. D-glucosamineoccurs in the cartilage in the form of glucosamine-6-phosphate, which issynthesized from fructose-6-phosphate and glutamine. However,glucosamine also is available in other forms, non-limiting examples ofwhich include glucosamine hydrochloride, glucosamine sulfate,N-acetyl-glucosamine, or any other salt forms or combinations thereof.

In certain embodiments, the functional ingredient comprises at least onemineral. Minerals comprise inorganic chemical elements required byliving organisms. Minerals are comprised of a broad range ofcompositions (e.g., elements, simple salts, and complex silicates) andalso vary broadly in crystalline structure. They may naturally occur infoods and beverages, may be added as a supplement, or may be consumed oradministered separately from foods or beverages. In particularembodiments of this invention, the mineral is chosen from bulk minerals,trace minerals or combinations thereof. Non-limiting examples of bulkminerals include calcium, chlorine, magnesium, phosphorous, potassium,sodium, and sulfur. Non-limiting examples of trace minerals includechromium, cobalt, copper, fluorine, iron, manganese, molybdenum,selenium, zinc, and iodine. Although iodine generally is classified as atrace mineral, it is required in larger quantities than other traceminerals and often is categorized as a bulk mineral.

In certain embodiments, the functional ingredient comprises at least onepreservative. In particular embodiments of this invention, thepreservative is chosen from antimicrobials, antioxidants, antienzymaticsor combinations thereof. Non-limiting examples of antimicrobials includesulfites, propionates, benzoates, sorbates, nitrates, nitrites,bacteriocins, salts, sugars, acetic acid, dimethyl dicarbonate (DMDC),ethanol, and ozone.

In certain embodiments, the functional ingredient is at least onehydration agent. Hydration products help the body to replace fluids thatare lost through excretion. In a particular embodiment, the hydrationproduct is a composition that helps the body replace fluids that arelost during exercise. Accordingly, in a particular embodiment, thehydration product is an electrolyte, non-limiting examples of whichinclude sodium, potassium, calcium, magnesium, chloride, phosphate,bicarbonate, and combinations thereof. In particular embodiments of thisinvention, the hydration product is a carbohydrate to supplement energystores burned by muscles. In another particular embodiment, thehydration agent is at least one flavanol that provides cellularrehydration. Havanols are a class of substances present in plants, andgenerally comprise a 2-phenylbenzopyrone molecular skeleton attached toone or more chemical moieties. In a particular embodiment, the hydrationagent comprises a glycerol solution to enhance exercise endurance. Theingestion of a glycerol containing solution has been shown to providebeneficial physiological effects, such as expanded blood volume, lowerheart rate, and lower rectal temperature.

In certain embodiments, the functional ingredient comprises at least oneprobiotic, prebiotic and combination thereof. Probiotics comprisemicroorganisms that benefit health when consumed in an effective amount.Desirably, probiotics beneficially affect the human body'sgastrointestinal microflora and impart health benefits apart fromnutrition. Probiotics may include, without limitation, bacteria, yeasts,and fungi. Examples of probiotics include, but are not limited to,bacteria of the genus Lactobacilli, Bifidobacteria, Streptococci, orcombinations thereof, that confer beneficial effects to humans.Prebiotics are compositions that promote the growth of beneficialbacteria in the intestines.

In certain embodiments, the functional ingredient is at least one weightmanagement agent. As used herein, “a weight management agent” includesan appetite suppressant and/or a thermogenesis agent. As used herein,the phrases “appetite suppressant”, “appetite satiation compositions”,“satiety agents”, and “satiety ingredients” are synonymous. The phrase“appetite suppressant” describes macronutrients, herbal extracts,exogenous hormones, anorectics, anorexigenics, pharmaceutical drugs, andcombinations thereof, that when delivered in an effective amount,suppress, inhibit, reduce, or otherwise curtail a person's appetite. Thephrase “thermogenesis agent” describes macronutrients, herbal extracts,exogenous hormones, anorectics, anorexigenics, pharmaceutical drugs, andcombinations thereof, that when delivered in an effective amount,activate or otherwise enhance a person's thermogenesis or metabolism.

In certain embodiments, the functional ingredient is at least oneosteoporosis management agent. In certain embodiments, the osteoporosismanagement agent is at least one calcium source. According to aparticular embodiment, the calcium source is any compound containingcalcium, including salt complexes, solubilized species, and other formsof calcium. According to a particular embodiment, the osteoporosismanagement agent is a magnesium source. The magnesium source is anycompound containing magnesium, including salt complexes, solubilizedspecies, and other forms of magnesium. In other embodiments, theosteoporosis agent is chosen from vitamins D, C. K, their precursorsand/or beta-carotene and combinations thereof.

In certain embodiments, the functional ingredient is at least onephytoestrogen. In one embodiment, a sweetener composition comprises atleast one phytoestrogen. As used herein, “phytoestrogen” refers to anysubstance which, when introduced into a body causes an estrogen-likeeffect of any degree. Examples of suitable phytoestrogens forembodiments of this invention include, but are not limited to,isoflavones, stilbenes, lignans, resorcyclic acid lactones, coumestans,coumestrol, equol, and combinations thereof.

Isoflavones belong to the group of phytonutrients called polyphenols. Ingeneral, polyphenols (also known as “polyphenolics”), are a group ofchemical substances found in plants, characterized by the presence ofmore than one phenol group per molecule. Suitable phytoestrogenisoflavones in accordance with embodiments of this invention includegenistein, daidzein, glycitein, biochanin A, formononetin, theirrespective glycosides and glycoside conjugates, matairesinol,secoisolariciresinol, enterolactone, enterodiol, textured vegetableprotein, and combinations thereof.

In certain embodiments, the functional ingredient is at least one longchain primary aliphatic saturated alcohol. Non-limiting examples ofparticular long-chain primary aliphatic saturated alcohols for use inparticular embodiments of the invention include the 8 carbon atom1-octanol, the 9 carbon 1-nonanol, the 10 carbon atom 1-decanol, the 12carbon atom 1-dodecanol, the 14 carbon atom 1-tetradecanol, the 16carbon atom 1-hexadecanol, the 18 carbon atom 1-octadecanol, the 20carbon atom 1-eicosanol, the 22 carbon 1-docosanol, the 24 carbon1-tetracosanol, the 26 carbon 1-hexacosanol, the 27 carbon1-heptacosanol, the 28 carbon 1-octanosol, the 29 carbon 1-nonacosanol,the 30 carbon 1-triacontanol, the 32 carbon 1-dotriacontanol, and the 34carbon 1-tetracontanol.

In certain embodiments, the functional ingredient is at least onephytosterol, phytostanol or combination thereof. As used herein, thephrases “stanol”, “plant stanol” and “phytostanol” are synonymous.Sterols are a subgroup of steroids with a hydroxyl group at C-3.Generally, phytosterols have a double bond within the steroid nucleus,like cholesterol; however, phytosterols also may comprise a substitutedsidechain (R) at C-24, such as an ethyl or methyl group, or anadditional double bond. The structures of phytosterols are well known tothose of skill in the art. Phytosterols well known to those or ordinaryskill in the art include 4-desmethylsterols (e.g., β-sitosterol,campesterol, stigmasterol, brassicasterol, 22-dehydrobrassicasterol, andA5-avenasterol), 4-monomethyl sterols, and 4,4-dimethyl sterols(triterpene alcohols) (e.g., cycloartenol, 24-methylenecycloartanol, andcyclobranol). Examples of phytostanols include β-sitostanol,campestanol, cycloartanol, and saturated forms of other triterpenealcohols.

Generally, the amount of functional ingredient in the sweetenercomposition or sweetened composition varies widely depending on theparticular sweetener composition or sweetened composition and thedesired functional ingredient. Those of ordinary skill in the art willreadily acertain the appropriate amount of functional ingredient foreach sweetener composition or sweetened composition.

Steviol glycosides, including compounds 1, 2, 3, and/or 4, or sweetenercompositions comprising teviol glycosides, including compounds 1, 2, 3,and/or 4, can be incorporated in any known edible material (referred toherein as a “sweetenable composition”) or other composition intended tobe ingested and/or contacted with the mouth of a human or animal, suchas, for example, pharmaceutical compositions, edible gel mixes andcompositions, dental and oral hygiene compositions, foodstuffs(confections, condiments, chewing gum, cereal compositions, baked goods,baking goods, cooking adjuvants, dairy products, and tabletop sweetenercompositions), beverages, and other beverage products (e.g., beveragemixes, beverage concentrates, etc.).

In one embodiment, a sweetened composition is derived from ingredientscomprising a sweetenable composition and additionally steviolglycosides, including compounds 1, 2, 3, and/or 4. In anotherembodiment, the sweetened composition is derived from ingredientscomprising a sweetener composition comprising Steviol glycosides,including compounds 1, 2, 3, and/or 4. The sweetened compositions canoptionally include one or more additives, liquid carriers, binders,sweeteners, functional ingredients, other adjuvants, and combinationsthereof.

In one embodiment, a pharmaceutical composition contains apharmaceutically active substance (including prodrug forms thereof) andsteviol glycosides, including compounds 1, 2, 3, and/or 4. In anotherembodiment, a pharmaceutical composition contains a pharmaceuticallyactive substance and a sweetener composition comprising steviolglycosides, including compounds 1, 2, 3, and/or 4. The steviol glycosidesweetener composition can be present as an excipient material in thepharmaceutical composition, which can mask a bitter or otherwiseundesirable taste of a pharmaceutically active substance or anotherexcipient material. The pharmaceutical composition may be in the form ofa tablet, a capsule, a liquid, an aerosol, a powder, an effervescenttablet or powder, a syrup, an emulsion, a suspension, a solution, or anyother form for providing the pharmaceutical composition to a patient. Inparticular embodiments, the pharmaceutical composition may be in a formfor oral administration, buccal administration, sublingualadministration, or any other route of administration as known in theart.

As referred to herein, “pharmaceutically active substance” means anydrug, drug formulation, medication, prophylactic agent, therapeuticagent, or other substance having biological activity. Pharmaceuticallyactive substances also include prodrug forms of these. As referred toherein, “excipient material” refers to any other ingredient used in apharmaceutically active composition used in combination withpharmaceutically active substance(s) that are present (includingprodrugs thereof. Excipients included but are not limited to inactivesubstances used as a vehicle for an active ingredient, such as anymaterial to facilitate handling, stability, dispersibility, wettability,and/or release kinetics of a pharmaceutically active substance.

Suitable pharmaceutically active substances include, but are not limitedto, medications for the gastrointestinal tract or digestive system, forthe cardiovascular system, for the central nervous system, for pain orconsciousness, for musculo-skeletal disorders, for the eye, for the ear,nose and oropharynx, for the respiratory system, for endocrine problems,for the reproductive system or urinary system, for contraception, forobstetrics and gynecology, for the skin, for infections andinfestations, for immunology, for allergic disorders, for nutrition, forneoplastic disorders, for diagnostics, for euthanasia, or otherbiological functions or disorders.

Examples of suitable pharmaceutically active substances for embodimentsof the present invention include, but are not limited to, antacids,reflux suppressants, antiflatulents, antidopaminergics, proton pumpinhibitors, cytoprotectants, prostaglandin analogues, laxatives,antispasmodics, antidiarrhoeals, bile acid sequestrants, opioids,beta-receptor blockers, calcium channel blockers, diuretics, cardiacglycosides, antiarrhythmics, nitrates, antianginals, vasoconstrictors,vasodilators, peripheral activators, ACE inhibitors, angiotensinreceptor blockers, alpha blockers, anticoagulants, heparin, antiplateletdrugs, fibrinolytics, anti-hemophilic factors, haemostatic drugs,hypolipidaemic agents, statins, hynoptics, anaesthetics, antipsychotics,antidepressants, anti-emetics, anticonvulsants, antiepileptics,anxiolytics, barbiturates, movement disorder drugs, stimulants,benzodiazepines, cyclopyrrolones, dopamine antagonists, antihistamines,cholinergics, anticholinergics, emetics, cannabinoids, analgesics,muscle relaxants, antibiotics, aminoglycosides, anti-virals,anti-fungals, anti-inflammatories, anti-gluacoma drugs,sympathomimetics, steroids, ceruminolytics, bronchodilators, NSAIDS,antitussive, mucolytics, decongestants, corticosteroids, androgens,antiandrogens, gonadotropins, growth hormones, insulin, antidiabetics,thyroid hormones, calcitonin, diphosponates, vasopressin analogues,alkalizing agents, quinolones, anticholinesterase, sildenafil, oralcontraceptives, Hormone Replacement Therapies, bone regulators, folliclestimulating hormones, luteinizings hormones, gamolenic acid,progestogen, dopamine agonist, oestrogen, prostaglandin, gonadorelin,clomiphene, tamoxifen, diethylstilbestrol, antileprotics,antituberculous drugs, antimalarials, anthelmintics, antiprotozoal,antiserums, vaccines, interferons, tonics, vitamins, cytotoxic drugs,sex hormones, aromatase inhibitors, somatostatin inhibitors, or similartype substances, or combinations thereof. Such components generally arerecognized as safe (GRAS) and/or are U.S. Food and Drug Administration(FDA)-approved.

The pharmaceutical composition also may comprise other pharmaceuticallyacceptable excipient materials in addition to a sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4.Examples of other suitable excipient materials for embodiments of thisinvention include, but are not limited to, other sweetening compounds,antiadherents, binders (e.g., microcrystalline cellulose, gumtragacanth, or gelatin), liquid carriers, coatings, disintegrants,fillers, diluents, softeners, emulsifiers, flavoring agents, coloringagents, adjuvants, lubricants, functional agents (e.g., nutrients),viscosity modifiers, bulking agents, glidiants (e.g., colloidal silicondioxide) surface active agents, osmotic agents, diluents, or any othernon-active ingredient, or combinations thereof. For example, thepharmaceutical compositions of the present invention may includeexcipient materials selected from the group consisting of calciumcarbonate, coloring agents, whiteners, preservatives, and flavors,triacetin, magnesium stearate, sterotes, natural or artificial flavors,essential oils, plant extracts, fruit essences, gelatins, orcombinations thereof.

In one embodiment, an edible gel or edible gel mix comprises a sweetenercomposition comprising steviol glycosides, including compounds 1, 2, 3,and/or 4. The edible gel or edible gel mixes can optionally includeadditives, functional ingredients or combinations thereof. Compounds 1,2, 3, and/or 4, or a mixture of compounds 1, 2, 3, and/or 4 with one ormore other steviol glycosides, such as Reb D or Reb M, can constitute asweetener composition of the present invention. However, in manyembodiments, a sweetener compositions comprises compounds 1, 2, 3,and/or 4, or a mixture of compounds 1, 2, 3, and/or 4 with one or moreother steviol glycosides, such as Reb D or Reb M and one or more otheringredient(s) that is not a steviol glycoside.

Edible gels are gels that can be eaten by a human or animal. Gels oftenappear to be solid, jelly-like materials. Non-limiting examples ofedible gel compositions for use in particular embodiments include geldesserts, puddings, jellies, pastes, trifles, aspics, marshmallows,gummy candies, or the like. Edible gel mixes generally are powdered orgranular solids to which a fluid may be added to form an edible gelcomposition. Because edible gel products found in the marketplacetypically are sweetened with sucrose, it is desirable to sweeten ediblegels with an alternative sweetener in order provide a low-calorie ornon-calorie alternative.

Non-limiting examples of gelling ingredients for use in particularembodiments include gelatin, alginate, carageenan, gum, pectin, konjac,agar, food acid, rennet, starch, starch derivatives, and combinationsthereof. It is well known to those having ordinary skill in the art thatthe amount of gelling ingredient used in an edible gel mix or an ediblegel composition varies considerably depending on a number of factors,such as the particular gelling ingredient used, the particular fluidbase used, and the desired properties of the gel.

Edible gel mixes and edible gels may be prepared using other ingredientsin addition to the sweetener composition comprising steviol glycosides,including compounds 1, 2, 3, and/or 4, and the gelling agent.Non-limiting examples of other ingredients for use in particularembodiments include a food acid, a salt of a food acid, a bufferingsystem, a bulking agent, a sequestrant, a cross-linking agent, one ormore flavors, one or more colors, and combinations thereof.

In one embodiment, a dental composition comprises a sweetenercomposition comprising comprising steviol glycosides, includingcompounds 1, 2, 3, and/or 4. Dental compositions generally comprise anactive dental substance and a base material. A sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4,can be used as the base material to sweeten the dental composition. Thedental composition may be in the form of any oral composition used inthe oral cavity such as mouth freshening agents, gargling agents, mouthrinsing agents, toothpaste, tooth polish, dentifrices, mouth sprays,teeth-whitening agent, dental floss, compositions to treat one or moreoral indications (e.g., gingivitis), and the like, for example.

As referred to herein, “active dental substance” means any compositionwhich can be used to improve the aesthetic appearance and/or health ofteeth or gums or prevent dental caries. As referred to herein, “basematerial” refers to any inactive substance used as a vehicle for anactive dental substance, such as any material to facilitate handling,stability, dispersibility, wettability, foaming, and/or release kineticsof an active dental substance.

Suitable active dental substances for embodiments of this inventioninclude, but are not limited to, substances which remove dental plaque,remove food from teeth, aid in the elimination and/or masking ofhalitosis, prevent tooth decay, and prevent gum disease (i.e., Gingiva).Examples of suitable active dental substances for embodiments of thepresent invention include, but are not limited to, anticaries drugs,fluoride, sodium fluoride, sodium monofluorophosphate, stannos fluoride,hydrogen peroxide, carbamide peroxide (i.e., urea peroxide),antibacterial agents, plaque removing agents, stain removers,anticalculus agents, abrasives, baking soda, percarbonates, perboratesof alkali and alkaline earth metals, or similar type substances, orcombinations thereof. Such components generally are recognized as safe(GRAS) and/or are U.S. Food and Drug Administration (FDA)-approved.

In a particular embodiment, a dental composition comprises a sweetenercomposition comprising steviol glycosides, including compounds 1, 2, 3,and/or 4, and an active dental substance. Generally, the amount of thesweetener varies widely depending on the nature of the particular dentalcomposition and the desired degree of sweetness. Those skilled in theart will be able to discern a suitable amount of sweetener for suchdental composition. In a particular embodiment, steviol glycosides,including compounds 1, 2, 3, and/or 4, is present in the dentalcomposition in a total amount in the range of about 1 to about 5,000 ppmof the dental composition and the at least one additive is present inthe dental composition in an amount in the range of about 0.1 to about100,000 ppm of the dental composition.

Foodstuffs include, but are not limited to, confections, condiments,chewing gum, cereal, baked goods, and dairy products.

In one embodiment, a confection comprises a sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4. Asreferred to herein, “confection” can mean a sweet, a lollie, aconfectionery, or similar term. The confection generally contains a basecomposition component and a sweetener component. A sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4 Ncan serve as the sweetener component. The confection may be in the formof any food that is typically perceived to be rich in sugar or istypically sweet. According to particular embodiments of the presentinvention, the confections may be bakery products such as pastries;desserts such as yogurt, jellies, drinkable jellies, puddings, Bavariancream, blancmange, cakes, brownies, mousse and the like, sweetened foodproducts eaten at tea time or following meals; frozen foods; coldconfections, e. g. types of ice cream such as ice cream, ice milk,lacto-ice and the like (food products in which sweeteners and variousother types of raw materials are added to milk products, and theresulting mixture is agitated and frozen), and ice confections such assherbets, dessert ices and the like (food products in which variousother types of raw materials are added to a sugary liquid, and theresulting mixture is agitated and frozen); general confections, e. g.,baked confections or steamed confections such as crackers, biscuits,buns with bean-jam filling, halvah, alfajor, and the like; rice cakesand snacks; table top products; general sugar confections such aschewing gum (e.g. including compositions which comprise a substantiallywater-insoluble, chewable gum base, such as chicle or substitutesthereof, including jetulong, guttakay rubber or certain comestible plantderived or synthetic resins or waxes), hard candy, soft candy, mints,nougat candy, jelly beans, fudge, toffee, taffy, Swiss milk tablet,licorice candy, chocolates, gelatin candies, marshmallow, marzipan,divinity, cotton candy, and the like; sauces including fruit flavoredsauces, chocolate sauces and the like; edible gels; cremes includingbutter cremes, flour pastes, whipped cream and the like; jams includingstrawberry jam, marmalade and the like; and breads including sweetbreads and the like or other starch products, and combinations thereof.As referred to herein, “base composition” means any composition whichcan be a food item and provides a matrix for carrying the sweetenercomponent.

In a particular embodiment, steviol glycosides including compounds 1, 2,3, and/or 4, are present in the confection in an amount in the range ofabout 30 ppm to about 6000 ppm of the confection, or about 1 ppm toabout 10,000 ppm of the confection.

In another embodiment, a condiment comprises steviol glycosides,including compounds 1, 2, 3, and/or 4. In another embodiment a condimentcomprises a sweetener composition comprising steviol glycosides,including compounds 1, 2, 3, and/or 4. Condiments, as used herein, arecompositions used to enhance or improve the flavor of a food orbeverage. Non-limiting examples of condiments include ketchup (catsup);mustard; barbecue sauce; butter; chili sauce; chutney; cocktail sauce;curry; dips; fish sauce; horseradish; hot sauce; jellies, jams,marmalades, or preserves; mayonnaise; peanut butter; relish; remoulade;salad dressings (e.g., oil and vinegar, Caesar, French, ranch, bleucheese, Russian, Thousand Island, Italian, and balsamic vinaigrette),salsa; sauerkraut; soy sauce; steak sauce; syrups; tartar sauce; andWorcestershire sauce.

In one embodiment, a chewing gum composition comprises a sweetenercomposition comprising steviol glycosides, including compounds 1, 2, 3,and/or 4. Chewing gum compositions generally comprise a water-solubleportion and a water-insoluble chewable gum base portion. The watersoluble portion, which typically includes the sweetener or sweetenercomposition, dissipates with a portion of the flavoring agent over aperiod of time during chewing while the insoluble gum base portion isretained in the mouth. The insoluble gum base generally determineswhether a gum is considered chewing gum, bubble gum, or a functionalgum.

In a particular embodiment, a chewing gum composition comprises or asweetener composition comprising steviol glycosides, including compounds1, 2, 3, and/or 4 and a gum base. In a particular embodiment, steviolglycosides, including compounds 1, 2, 3, and/or 4 are present in thechewing gum composition in a total amount in the range of about 1 ppm toabout 10,000 ppm of the chewing gum composition.

In one embodiment, a cereal composition comprises a sweetenercomposition comprising steviol glycosides, including compounds 1, 2, 3,and/or 4. Cereal compositions typically are eaten either as staple foodsor as snacks. Non-limiting examples of cereal compositions for use inparticular embodiments include ready-to-eat cereals as well as hotcereals. Ready-to-eat cereals are cereals which may be eaten withoutfurther processing (i.e. cooking) by the consumer. Examples ofready-to-eat cereals include breakfast cereals and snack bars. Breakfastcereals typically are processed to produce a shredded, flaky, puffy, orextruded form. Breakfast cereals generally are eaten cold and are oftenmixed with milk and/or fruit. Snack bars include, for example, energybars, rice cakes, granola bars, and nutritional bars. Hot cerealsgenerally are cooked, usually in either milk or water, before beingeaten. Non-limiting examples of hot cereals include grits, porridge,polenta, rice, and rolled oats.

A sweetener composition comprising steviol glycosides, includingcompounds 1, 2, 3, and/or 4, can be is added to the cereal compositionas a coating, such as, for example, by combining a sweetener comprisingthe steviol glycosides with a food grade oil and applying the mixtureonto the cereal. In a different embodiment, a sweetener compositioncomprising the steviol glycosides and the food grade oil may be appliedto the cereal separately, by applying either the oil or the sweetenerfirst. A sweetener composition comprising steviol glycosides can also beadded to the cereal composition as a glaze. Steviol glycosides can beadded as a glaze by combining with a glazing agent and a food grade oilor fat and applying the mixture to the cereal. In yet anotherembodiment, a gum system, such as, for example, gum acacia,carboxymethyl cellulose, or algin, may be added to the glaze to providestructural support. In addition, the glaze also may include a coloringagent, and also may include a flavor. A sweetener composition comprisingsteviol glycosides can also be added to the cereal composition as afrosting. In one such embodiment, a sweetener composition comprisingsteviol glycosides is combined with water and a frosting agent and thenapplied to the cereal.

In a particular embodiment, steviol glycosides are present in the cerealcomposition in an amount in the range of about 0.02 to about 1.5 weightpercent of the cereal composition.

In another embodiment, a baked good comprises a sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4.Baked goods, as used herein, include ready to eat and all ready to bakeproducts, flours, and mixes requiring preparation before serving.Non-limiting examples of baked goods include cakes, crackers, cookies,brownies, muffins, rolls, bagels, donuts, strudels, pastries,croissants, biscuits, bread, bread products, and buns.

Exemplary baked goods can be classified into three groups: bread-typedoughs (e.g., white breads, variety breads, soft buns, hard rolls,bagels, pizza dough, and flour tortillas), sweet doughs (e.g., danishes,croissants, crackers, puff pastry, pie crust, biscuits, and cookies),and batters (e.g., cakes such as sponge, pound, devil's food,cheesecake, and layer cake, donuts or other yeast raised cakes,brownies, and muffins). Doughs generally are characterized as beingflour-based, whereas batters are more water-based.

Baked goods in accordance with particular embodiments of this inventiongenerally comprise a combination of sweetener, water, and fat. Bakedgoods made in accordance with many embodiments of this invention alsocontain flour in order to make a dough or a batter. The term “dough” asused herein is a mixture of flour and other ingredients stiff enough toknead or roll. The term “batter” as used herein consists of flour,liquids such as milk or water, and other ingredients, and is thin enoughto pour or drop from a spoon.

In one embodiment, a dairy product comprises a sweetener compositioncomprising comprising steviol glycosides, including compounds 1, 2, 3,and/or 4. Dairy products and processes for making dairy productssuitable for use in this invention are well known to those of ordinaryskill in the art. Dairy products, as used herein, comprise milk orfoodstuffs produced from milk. Non-limiting examples of dairy productssuitable for use in embodiments of this invention include milk, milkcream, sour cream, creme fraiche, buttermilk, cultured buttermilk, milkpowder, condensed milk, evaporated milk, butter, cheese, cottage cheese,cream cheese, yogurt, ice cream, frozen custard, frozen yogurt, gelato,via, piima, filmjOlk, kajmak, kephir, viili, kumiss, airag, ice milk,casein, ayran, lassi, khoa, or combinations thereof. Milk is a fluidsecreted by the mammary glands of female mammals for the nourishment oftheir young. The female ability to produce milk is one of the definingcharacteristics of mammals and provides the primary source of nutritionfor newborns before they are able to digest more diverse foods. Inparticular embodiments of this invention, the dairy products are derivedfrom the raw milk of cows, goats, sheep, horses, donkeys, camels, waterbuffalo, yaks, reindeer, moose, or humans.

In a particularly desirable embodiment, the dairy composition comprisesa sweetener composition comprising steviol glycosides, includingcompounds 1, 2, 3, and/or 4, in combination with a dairy product. In aparticular embodiment, steviol glycosides, including compounds 1, 2, 3,and/or 4, are present in the dairy composition in an total amount in therange of about 200 to about 20,000 weight percent of the dairycomposition.

Tabletop sweetener compositions containing steviol glycosides, includingcompounds 1, 2, 3, and/or 4, are also contemplated herein. The tabletopcomposition can further include a variety of other ingredients,including but not limited to at least one bulking agent, additive,anti-caking agent, functional ingredient or combination thereof.

Suitable “bulking agents” include, but are not limited to, maltodextrin(10 DE, 18 DE, or 5 DE), corn syrup solids (20 or 36 DE), sucrose,fructose, glucose, invert sugar, sorbitol, xylose, ribulose, mannose,xylitol, mannitol, galactitol, erythritol, maltitol, lactitol, isomalt,maltose, tagatose, lactose, inulin, glycerol, propylene glycol, polyols,polydextrose, fructooligosaccharides, cellulose and cellulosederivatives, and the like, and mixtures thereof. Additionally, inaccordance with still other embodiments of the invention, granulatedsugar (sucrose) or other caloric sweeteners such as crystallinefructose, other carbohydrates, or sugar alcohol can be used as a bulkingagent due to their provision of good content uniformity without theaddition of significant calories.

The tabletop sweetener compositions can be packaged in any form known inthe art. Non-limiting forms include, but are not limited to, powderform, granular form, packets, tablets, sachets, pellets, cubes, solids,and liquids. The amount of steviol glycosides, including compounds 1, 2,3, and/or 4, in a dry-blend tabletop sweetener formulation can vary. Ina particular embodiment, a dry-blend tabletop sweetener formulation maycontain steviol glycosides in an amount from about 1% (w/w) to about 10%(w/w) of the tabletop sweetener composition.

A tabletop sweetener composition also may be embodied in the form of aliquid, wherein a sweetener composition comprising steviol glycosides,including compounds 1, 2, 3, and/or 4, is combined with a liquidcarrier. Suitable non-limiting examples of carrier agents for liquidtabletop functional sweeteners include water, alcohol, polyol, glycerinbase or citric acid base dissolved in water, and mixtures thereof.

In one embodiment, the sweetened composition is a beverage productcomprising steviol glycosides, including compounds 1, 2, 3, and/or 4. Asused herein a “beverage product” is a ready-to-drink beverage, abeverage concentrate, a beverage syrup, frozen beverage, or a powderedbeverage. Suitable ready-to-drink beverages include carbonated andnon-carbonated beverages. Carbonated beverages include, but are notlimited to, enhanced sparkling beverages, cola, lemon-lime flavoredsparkling beverage, orange flavored sparkling beverage, grape flavoredsparkling beverage, strawberry flavored sparkling beverage, pineappleflavored sparkling beverage, ginger-ale, soft drinks and root beer.Non-carbonated beverages include, but are not limited to fruit juice,fruit-flavored juice, juice drinks, nectars, vegetable juice,vegetable-flavored juice, sports drinks, energy drinks, enhanced waterdrinks, enhanced water with vitamins, near water drinks (e.g., waterwith natural or synthetic flavorants), coconut water, tea type drinks(e.g. black tea, green tea, red tea, oolong tea), coffee, cocoa drink,beverage containing milk components (e.g. milk beverages, coffeecontaining milk components, cafe au lait, milk tea, fruit milkbeverages), beverages containing cereal extracts, smoothies andcombinations thereof.

Examples of frozen beverages, include, but are not limited to, icees,frozen cocktails, daiquiris, pina coladas, margaritas, milk shakes,frozen coffees, frozen lemonades, granitas, and slushees.

Beverage concentrates and beverage syrups can be prepared with aninitial volume of liquid matrix (e.g. water) and the desired beverageingredients. Full strength beverages are then prepared by adding furthervolumes of water. Powdered beverages are prepared by dry-mixing all ofthe beverage ingredients in the absence of a liquid matrix. Fullstrength beverages are then prepared by adding the full volume of water.

In one embodiment, a beverage contains a sweetener compositioncomprising steviol glycosides, including compounds 1, 2, 3, and/or 4.Any sweetener composition comprising steviol glycosides, includingcompounds 1, 2, 3, and/or 4 detailed herein can be used in thebeverages. In another embodiment, a method of preparing a beveragecomprises combining a liquid matrix and steviol glycosides, includingcompounds 1, 2, 3, and/or 4. The method can further comprise addition ofone or more sweeteners, additives and/or functional ingredients. Instill another embodiment, a method of preparing a beverage comprisescombining a liquid matrix and a sweetener composition comprising steviolglycosides, including compounds 1, 2, 3, and/or 4.

In another embodiment, a beverage contains a sweetener compositioncontaining steviol glycosides, including compounds 1, 2, 3, and/or 4,wherein the steviol glycosides are present in the beverage in an amountranging from about 1 ppm to about 10,000 ppm, such as, for example, fromabout 25 ppm to about 800 ppm. In another embodiment, steviol glycosidesare present in the beverage in an amount ranging from about 100 ppm toabout 600 ppm. In yet other embodiments, steviol glycosides are presentin the beverage in an amount ranging from about 100 to about 200 ppm,from about 100 ppm to about 300 ppm, from about 100 ppm to about 400ppm, or from about 100 ppm to about 500 ppm. In still anotherembodiment, steviol glycosides are present in the beverage in an amountranging from about 300 to about 700 ppm, such as, for example, fromabout 400 ppm to about 600 ppm. In a particular embodiment, steviolglycosides are present in the beverage in an amount of about 500 ppm

A method for imparting a more sugar-like temporal profile, flavorprofile, or both to a sweetenable composition comprises combining asweetenable composition with the sweetener compositions of the presentinvention, i.e., sweetener compositions containing steviol glycosides,including compounds 1, 2, 3, and/or 4.

The method can further include the addition of other sweeteners,additives, functional ingredients and combinations thereof. Anysweetener, additive or functional ingredient detailed herein can beused.

As used herein, the “sugar-like” characteristics include anycharacteristic similar to that of sucrose and include, but are notlimited to, maximal response, flavor profile, temporal profile,adaptation behavior, mouthfeel, concentration/response function,tastant/and flavor/sweet taste interactions, spatial patternselectivity, and temperature effects.

In certain embodiments, an agglomerate of steviol glycosides, includingcompounds 1, 2, 3, and/or 4, sweetener composition is provided. As usedherein, “sweetener agglomerate” means a plurality of sweetener particlesclustered and held together. Examples of sweetener agglomerates include,but are not limited to, binder held agglomerates, extrudates, andgranules. Methods for making agglomerates are known to those of ordinaryskill in the art, and are disclosed in more detail in U.S. Pat. No.6,180,157. Generally described, the process for preparing an agglomeratein accordance with a certain embodiment comprises the steps of preparinga premix solution comprising steviol glycosides, including compounds 1,2, 3, and/or 4, sweetener composition and a binding agent in a solvent,heating the premix to a temperature sufficient to effectively form amixture of the premix, applying the premix onto a fluidized carrier by afluid bed agglomerator, and drying the resulting agglomerate. Thesweetness level of the resulting agglomerate may be modified by varyingthe amount of the sweetener composition in the premix solution.

In some embodiments provided are substantially dustless andsubstantially free-flowing extrudates or extruded agglomerates ofsteviol glycosides, including compounds 1, 2, 3, and/or 4, for asweetener composition. Such particles may be formed with or without theuse of binders using extrusion and spheronization processes.

“Extrudates” or “extruded sweetener composition”, as used herein, refersto cylindrical, free-flowing, relatively non-dusty, mechanically stronggranules of steviol glycosides, including compounds 1, 2, 3, and/or 4.The terms “spheres” or “spheronized sweetener composition”, as usedherein, refer to relatively spherical, smooth, free-flowing, relativelynon-dusty, mechanically strong granules. A process for making extrudatesare described in U.S. Pat. No. 6,365,216.

In another embodiment, granulated forms of steviol glycosides, includingcompounds 1, 2, 3, and/or 4. are provided. As used herein, the terms“granules,” “granulated forms,” and “granular forms” are synonymous andrefer to free-flowing, substantially non-dusty, mechanically strongagglomerates of the steviol glycoside sweetener composition. Methods ofgranulation are known to those of ordinary skill in the art and aredescribed in more detail in the PCT Publication WO 01/60842.

Example 1

Fermentation for Steviol Glycoside Production Including Compounds 1-4

Steviol glycoside compounds, including compounds 1-4, Reb D and Reb M,were produced by genetically engineered Saccharomyces cerevisiae.Saccharomyces strains EFSC 3261 and EFSC 3841 are described inInternational Application No. WO2014/122227.

Fed-batch fermentation was carried out aerobically in 2 L (workingvolume) fermenters which included a ˜16 hour growth phase in the basemedium (minimal medium containing glucose, ammonium sulfate, tracemetals, vitamins, salts, and buffer) followed by ˜100 hours of feedingwith a glucose-containing defined feed medium. Glucose was utilized asthe carbon and energy source and combined with trace metals, vitamins,and salts. The pH was kept near pH 5 and the temperature setpoint was30° C. The feed rate was controlled to prevent oxygen depletion and tominimize ethanol formation (glucose-limited conditions). Thefermentation minimal medium is based on Verduyn C, Postma E, Scheffers WA, Van Dijken J P. (1992). Yeast 8, 501-517.

Example 2

Purification of Compounds 1-4 and NMR Spectroscopy

Compounds 1-4 (designated in the purification chromatogram as shown inFIGS. 2 and 3 as OPS1-1, OPS1-2, OPS1-4, and OPS1-5) were purified withpreparative liquid chromatography as follows. Dried fermentation brothenriched in these compounds was used as the starting material forpurification. The material was dissolved in 50:50 ethanol:water bysonication at 50° C. 5 mL of the solution was filtered through a 0.2 μmnylon syringe tip filter into a 5 mL autosampler vial for injection ontoan Agilent 1260 preparative LC.

Compound 1 (OPS1-1) and Compound 2 (OPS1-2) fractions were purified asfollows: 2.5 mL of sample was injected on the Phenomenex Kinetex XB-C185 21.2×250 mm column. A mixture of methanol and water (40:60 v/v) wasused as a solvent. The flow rate was set at 20 mL/min, with a maximumpressure of 400 bar. FIG. 2: OPS 1-1 and OPS 1-2 purificationchromatogram. Vial 2 is compound 1 (OPS 1-1) and vial 4 is compound 2(OPS 1-2). Purified fractions of each compound from multiple injectionswere pooled together and dried under nitrogen at room temperature,producing the solid material that was characterized by NMR.

Compound 3 (OPS1-4) and Compound 4 (OPS1-5) fractions were purified asfollows: 2.5 mL of sample was injected on the Phenomenex Kinetex XB-C185 21.2×250 mm column. A mixture of methanol and water (40:60 v/v) wasused as a solvent. The flow rate was set at 20 mL/min, with a maximumpressure of 400 bar. FIG. 3: OPS 1-4 and OPS 1-5 purificationchromatogram. Vial 2 is compound 1 (OPS 1-1) and vial 4 is compound 2(OPS 1-2). Vial 10 contains OPS 1-4 and vial 9 contains OPS 1-5.

Purified fractions of each compound from multiple injections were pooledtogether and dried under nitrogen at room temperature, producing thesolid material. OPS 1-4 and OPS 1-5 were repurified by solubilizing in50% ethanol and injecting on this method again to collect only the OPS1-4 and OPS 1-5 compounds. Purified fractions of each compound frommultiple injections were pooled together and dried under nitrogen atroom temperature, producing the solid material that was characterized byNMR.

All NMR spectra were acquired on a 800 MHz Bruker Avance machine (800MHz for 1H, 201 MHz for 13C) equipped with a cryogenic probe (5 mm CPTCI1H-13C/15N/D Z-GRD Z44909/0010). OPS1-1 was dissolved in 550 ulDMSO-d6/D2O 1:1 and run in 5 mm tubes. OPS1-2 was dissolved in 60 ul D20and measured in a 1.7 mm tube. OPS1-4 & 5 were dissolved in 200 ul D20(TSP as standard for chemical shift referencing) and measured in 3 mmtubes. OPS1-1 & 2 were measured at 25 C, OPS1-4 & 5 at 40 C.

Structures were solved by means of standard homo- and heteronuclearmultipulse NMR experiments, namely ¹H, ¹H-COSY, ¹H, ¹H-ROESY, ¹H,¹³C-HSQC and ¹H, ¹³C-HMBC.

FIGS. 4A-7D constitute graphs showing the position and number ofchemical shifts from NMR spectroscopy, ¹H NMR and ¹³C NMR spectroscopydata and atom numbering, and chemical assignments based on COSY, TOCSY,HSQC-DEPT, and HMBC correlations for compounds 1-4 (OPS 1-1, OPS 1-2,OPS 1-4, and OPS 1-5).

Example 3

Steviol Glycoside Composition of Fermentation Media

The fermentation media prepared from Example 1 was analyzed to determinethe types and amounts of steviol glycoside compounds, includingcompounds 1-4.

TABLE 1 Profile of 140501-B1 Compound 1 3.73 Compound 2 0.51 Compound 30.64 Reb D 37.83 Compound 4 0.19 Reb M 57.58 Total Steviol Glycosides99.9%

Example 4

Enhancement of Steviol Glycoside Solubility by Compounds 1-4

The presence of compounds 1-4, even at low concentrations, showed asignificant effect on the solubility of rebD and rebM in a composition.The instantaneous and equilibrium solubility was studied for pure rebD,rebM, a blend of pure rebD/rebM, and compared to the solubility of rebDand rebM from the fermentation composition containing these isomers

Instantaneous solubility is determined by mixing steviol glycoisde withdeionized water vigorously for 10 minutes at room temperature.Equilibrium solubility is determined by heating deionized water withsteviol glycoside at 80° C. for 15 minutes and cooling down to roomtemperature for observation up to 4 days. Clear solutions withoutprecipitates are considered soluble. The results are shown below.

RebD has a very low instantaneous solubility (<0.08% at roomtemperature). Upon heating to 80° C. for 15 minutes, rebD stayed solubleat 0.08% for at least 4 days at room temperature. Table 2 reflects theinstantaneous and equilibrium solubility of RebD.

TABLE 2 RebD 0.08% 0.10% 0.15% 0.20% instantaneous equilibrium soluble

RebM has a higher solubility than rebD. Its instantaneous solubility isat least 0.13% and with heating, the equilibrium solubility of rebM isat least 0.2% at room temperature. Table 3 reflects the instantaneousand equilibrium solubility of RebD.

TABLE 3 RebM 0.10% 0.13% 0.20% 0.30% instantaneous soluble solubleequilibrium soluble soluble soluble

To assess if rebM would enhance the solubility of rebD, a mixture ofrebD and rebM at different ratios were used. No improvement ininstantaneous solubility was seen by blending rebD and with rebM and noobvious increase in equilibrium solubility was seen either. Table 4reflects the instantaneous and equilibrium solubility of the RebD andRebM mixture.

TABLE 4 D/M 0.08% D/0.12% M 0.08% D/0.17% M 0.11% D/0.24% Minstantaneous equilibrium soluble soluble

Surprisingly, fermentation derived steviol glycoside composition fromExample 1, which includes compounds 1-4, was found to have asignificantly improved solubility over pure rebD and rebM mixtures. Atleast 0.37% of fermentation steviol glycoside is soluble instantaneouslyin room temperature water, which contains 0.14% rebD and 0.21% rebM.Therefore a 75% improvement in solubility over pure rebD was shown inthe presence of compounds 1-4. Table 5 reflects the instantaneous andequilibrium solubility fermentation derived steviol glycosidecomposition which includes RebD, RebM, and compounds 1-4.

TABLE 5 Lot 140501-B1 0.14% D/0.21% M 0.20% D/0.30% M instantaneoussoluble equilibrium soluble

The invention claimed is:
 1. Compound 1 according to the followingstructure:


2. A sweetener composition, comprising compound 1 of claim
 1. 3. Thesweetener composition of claim 2, further comprising one or more steviolglycosides selected from a group comprising rebaudioside M, rebaudiosideD, rebaudioside A, rebaudioside B, rebaudioside N, and stevioside. 4.The sweetener composition of claim 2, wherein compound 1 comprises inthe range of about 0.05% to about 5% of the total amount steviolglycosides in the composition.
 5. The sweetener composition of claim 2,wherein compound 1 comprises in the range of about 2% to about 4.5% ofthe total amount steviol glycosides in the composition.
 6. Compound 2according to the following structure:


7. A sweetener, composition comprising compound 2 of claim
 6. 8. Thesweetener composition of claim 7, further comprising one or more steviolglycosides selected from a group comprising rebaudioside M, rebaudiosideD, rebaudioside A, rebaudioside B, rebaudioside N, and stevioside. 9.The sweetener composition of claim 7, wherein compound 2 comprises inthe range of about 0.05% to about 5% of the total amount steviolglycosides in the composition.
 10. The sweetener composition of claim 7,wherein compound 2 comprises in the range of about 0.1% to about 1.5% ofthe total amount steviol glycosides in the composition.
 11. Compound 3according to the following structure:


12. A sweetener composition, comprising compound 3 of claim
 11. 13. Thesweetener composition of claim 12, further comprising one or moresteviol glycosides selected from a group comprising rebaudioside M,rebaudioside D, rebaudioside A, rebaudioside B, rebaudioside N, andstevioside.
 14. The sweetener composition of claim 12, wherein compound3 comprises in the range of about 0.05% to about 5% of the total amountsteviol glycosides in the composition.
 15. The sweetener composition ofclaim 12, wherein compound 3 comprises in the range of about 0.1% toabout 1.5% of the total amount steviol glycosides in the composition.16. Compound 4 according to the following structure:


17. A sweetener composition, comprising compound 4 of claim
 16. 18. Thesweetener composition of claim 17, further comprising one or moresteviol glycosides selected from a group comprising rebaudioside M,rebaudioside D, rebaudioside A, rebaudioside B, rebaudioside N, andstevioside.
 19. The sweetener composition of claim 17, wherein compound4 comprises in the range of about 0.05% to about 5% of the total amountsteviol glycosides in the composition.
 20. The sweetener composition ofclaim 17, wherein compound 4 comprises in the range of about 0.05% toabout 1% of the total amount steviol glycosides in the composition.